PDF malware analysis — malicious · 4d29d0735c8c19e9

MALICIOUS

PDF

535.6 KB

MD5: 1a637c870be7049600218cc3ab85c90a SHA-1: 53784e06e17a34ed70b7e25e9c0de4a990ebc03c SHA-256: 4d29d0735c8c19e983eaf5a2bfbb7709e80f80e482a60d01a9789afdc86aafe4

218 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded JavaScript that utilizes `eval()` and `unescape()` functions, indicating obfuscation. The critical heuristic `CVE_2009_0927` specifically points to the exploitation of this CVE via JavaScript, which is used to launch further malicious activity. The presence of embedded JavaScript and the exploitation of a known PDF vulnerability suggest a downloader or exploit delivery mechanism. No specific family could be confidently identified.

Heuristics 8

Collab.getIcon — CVE-2009-0927 critical CVE exact CVE_2009_0927

PDF JavaScript calls Collab.getIcon — CVE-2009-0927 is a stack buffer overflow in Adobe Reader triggered by Collab.getIcon() with a crafted argument. Allows arbitrary code execution. (identified after JavaScript deobfuscation)
ClamAV: Pdf.Exploit.Agent-35930 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35930
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
unescape() call high PDF_UNESCAPE

unescape() found — often used to decode shellcode in PDF JS exploits (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.
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://ns.InsiderSoftware.com/fontlist/1.0/
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/sType/ResourceRef#
- http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/

Extracted artifacts 10

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0017_000.js` `f23e505f155bfa9b9f356fa9fddf8d7fcafcc37fc2df3878e575e72c00c819d4`	pdf-javascript-stream	PDF /JS object 17 at offset 0x3E32	697 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_000.js` `1f8446f89efa43f97d1a56f5607a77e8d237640fa1355592f37545f6eaaa3fcf`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x84A95	2619 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`icc_00_off00071486.icc` `2b3aa1645779a9e634744faf9b01e9102b0c9b88fd6deced7934df86b949af7e`	pdf-icc-profile	PDF ICC profile at offset 0x71486	3144 bytes
`font_00_sfnt_off00004d32.bin` `afeb9e1e920aae3aca3f295f1bbccba46b16423dac14b1b5fde4b661de9198cc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4D32	46764 bytes
`font_01_sfnt_off0000c35b.bin` `5f96e1e90c4ef56487c91d02c05141dca0967f8e2bbd5d67be6c4f381f0afa79`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC35B	62160 bytes
`font_02_sfnt_off000157b1.bin` `b661c2e877dd6b7625208ae148d736aedb24eda2d4f014262cbb7f958f538ca0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x157B1	71216 bytes
`font_08_sfnt_off0005535f.bin` `8b62f203a4ab5c2ac76368029c584b4fa12fffc17f3b6e4e43a9997416807d21`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5535F	11156 bytes
`font_09_sfnt_off00057310.bin` `d375c22ace40f0b973d7308d85023b2e0e49d40dc51da45552d116868346475e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x57310	37232 bytes
`font_11_sfnt_off00066d18.bin` `6cf6df6beee88aa138f821122d0c1969b348cebe09cafe5b5f6a7eb8c27107a0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66D18	32640 bytes
`font_12_sfnt_off0007bde9.bin` `95592346b00d039686aa3d7e22eae3d52b011e7e842a5c123f73e89ea766cd35`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BDE9	22628 bytes

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