PDF malware analysis — malicious · 420b46ea61c43e7e

MALICIOUS

PDF

238.5 KB Created: 2004-05-11 11:43:23 +09:00 Authoring application: Visual Comform (via Acrobat Distiller 6.0 (Windows))

MD5: 43b6b2b1b74ec46df3b8bb5233d13f25 SHA-1: 51e8dcaa1c183f142b46042d2387fbab84273326 SHA-256: 420b46ea61c43e7e0fab865edd603650c07ca88440faa7e7a1ed83ad14b6ef76

74 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains multiple embedded JavaScript streams and triggers JavaScript actions, including the use of eval(). This indicates an attempt to execute malicious code. The heuristics suggest obfuscated JavaScript and the potential for downloading further payloads. While specific IOCs like URLs or hashes are not directly extracted from the provided evidence, the presence of eval() and multiple JS streams strongly points to a malicious script execution attempt.

Heuristics 7

eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Additional-actions dictionary low PDF_AA

PDF defines /AA (Additional Actions) that references an executable action (JS/JavaScript/Launch/SubmitForm) — can auto-trigger on document or widget events. Form-field calc/format/validate/keystroke handlers in legitimate interactive forms commonly fire this, so it is reported as a low-weight signal; weaponised auto-execution is flagged by stronger rules (PDF_OPENACTION, encrypted-with-JS, etc.)
AcroForm button with action trigger low PDF_ACROFORM_BUTTON

PDF contains a /Btn form field together with a SubmitForm/URI/Launch/JS trigger — this is the building block of fake 'Download' or 'Open' button overlays used in PDF phishing lures
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/iX/1.0/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://purl.org/dc/elements/1.1/

Extracted artifacts 32

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0118_000.js` `1643e33834fb94bf1ba14c71ab53de567f222004317308691226cda494d0becd`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	1852 bytes
`javascript_obj0118_001.js` `2b9a0061ccee67d2244a7ce0641f9e8b6ef3660a357c785e3fc49f7b1e49d0ed`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	314 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0118_002.js` `441baec9cee7bf502af04107a26dddf8cf4fbe28247c9026812c9af7eaaf702c`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	396 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0118_003.js` `cc5d59f0bd08326d4e68a2fead89da85e8988100fdf58f95febb3cb47ea87e97`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	1383 bytes
`javascript_obj0118_004.js` `de9cc45c4828428f6a577f5ff489cdb34481f19c9d5a4c65a0cf81407e3fd324`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	1148 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s).
`javascript_obj0118_005.js` `e3dc3fc4af64449c6eec48316ecd03f299737a62c7b373eb74bfa01a4726d1ed`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	161 bytes
`javascript_obj0118_006.js` `99183dc67d5af21cbe8a152c22b7de48aa752b0b4ebca61452a0ff08d746997a`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	116 bytes
`javascript_obj0118_007.js` `0850e9024bdc24b0b897b3419e71436049f119d27032eae7cb1280bb672e11bc`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	238 bytes
`javascript_obj0118_008.js` `89d60de97efacab1dc4f03e4af7c2d9214d1a28bfcf7232b645789808f6132df`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	216 bytes
`javascript_obj0118_009.js` `6ef69f6841497da54277bbd931253d6b9bc450c38a93d8f8665938dc7cf387c4`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	401 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0118_010.js` `224498a88b3f702cf9f50dba00b82d28a42fb16349456c81e7447448d10e3a94`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	213 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0118_011.js` `37d6d9277a90084e81c9168d6e8ae59ce99aa6d64c0b65f788fcd0d510465517`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	217 bytes
`javascript_obj0118_012.js` `65f9826ce2b5f2db0156ad694d4039a5ac735abf93494e3ab637640df23c4ac8`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	934 bytes
`javascript_obj0118_013.js` `480378be7c68f883b60c2681167ae193370929e7588b1ce000de0edcaaf941c4`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	4632 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 26 eval/decoder/string-building token(s).
`javascript_obj0118_014.js` `55dfb73aab573d1940fcdb75eb6cdee6f87d4b39e03a8ee96beebdaa8633ea31`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	293 bytes
`javascript_obj0118_015.js` `0128f9a12acc25c9cbe9769fec2cf7f3cd4df7e4133bd9c8f696f6cd967a1fac`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	199 bytes
`javascript_obj0118_016.js` `e442403bf51f06be6f9798f92856d0aca615913e21990cd9cd3907e64d3f5870`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	322 bytes
`javascript_obj0118_017.js` `bbcc28a3cf689c7d9ddd745e3fdbb058d047ad992549bdb6f1363c366a7ded32`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	326 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0118_018.js` `1cf9283d997f29cd6560a978258e61737edd9a05532feb23814338d5ce6bb56f`	pdf-javascript-stream	PDF /JS object 118 at offset 0xFAD	281 bytes
`javascript_obj0126_019.js` `f6b3182b8d9b01d061bad614eba2b9b235b0b6f57b10676061e2a5cce2215bf1`	pdf-javascript-stream	PDF /JS object 126 at offset 0x531F	67 bytes
`javascript_obj0126_020.js` `4aeffa156f35d212442a9968a3c02a2b0689299eec713e4854b0c94ad332e92e`	pdf-javascript-stream	PDF /JS object 126 at offset 0x531F	51 bytes
`javascript_obj0126_021.js` `428d7eab2c72ff27dc2109de18f6cc07c36e919bf1a535f1a60931ed0ec46430`	pdf-javascript-stream	PDF /JS object 126 at offset 0x531F	57 bytes
`javascript_obj0128_022.js` `f2056e8bc4a04d05afb51ceae80ab15a815aa1c0207101a5e4dc755c77292f3c`	pdf-javascript-stream	PDF /JS object 128 at offset 0x5626	67 bytes
`javascript_obj0130_023.js` `862028fe0215da8e6a1052e157fff081f4b5c5bdcf8f5db7303ca087e6df4d26`	pdf-javascript-stream	PDF /JS object 130 at offset 0x592D	67 bytes
`javascript_obj0132_024.js` `60bd594b98f3c38bd7372e2e18b685de5d60538153b9aa13c5d10adea757b752`	pdf-javascript-stream	PDF /JS object 132 at offset 0x5C34	67 bytes
`javascript_obj0138_025.js` `0d13a20c056a34bea817c33f6313211bcb336ead5cbba4eafcbaef20d6516ae3`	pdf-javascript-stream	PDF /JS object 138 at offset 0x6366	67 bytes
`javascript_obj0140_026.js` `7de5da0008534ac7a162bd554a03fb7db652f364428a8285127ad2399a1ff65f`	pdf-javascript-stream	PDF /JS object 140 at offset 0x6666	67 bytes
`javascript_obj0142_027.js` `40e5d0a1ecbc98d44728d56c1ff9f2e43134f5909f85af403831fe754c3d81c9`	pdf-javascript-stream	PDF /JS object 142 at offset 0x6969	68 bytes
`javascript_obj0144_028.js` `1e0fbb71294d5abfd0050d27372b7f8723a12ba288924a7006e826a574462f19`	pdf-javascript-stream	PDF /JS object 144 at offset 0x6C6D	68 bytes
`javascript_obj0148_029.js` `0806fa53f3a109419c9f933cbdec88d9f0f02060afd28fbb605b5d34f9697a7e`	pdf-javascript-stream	PDF /JS object 148 at offset 0x7215	68 bytes
`javascript_obj0151_030.js` `d999cbb371952c317d3fe8ae19572124f8ab94018592b3e3d45ea31d9d4fdb41`	pdf-javascript-stream	PDF /JS object 151 at offset 0x7BDE	68 bytes
`javascript_obj0157_031.js` `34f74de88a4b1fd98c5b77a2be91a69a7857d5eb224871161c8e51afd2eb669d`	pdf-javascript-stream	PDF /JS object 157 at offset 0x83B3	64 bytes

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