PDF malware analysis — malicious · 7e9d19ce60a0bb2f

MALICIOUS

PDF

241.4 KB

MD5: 48fe0d020749fc41347c70dac32f11ef SHA-1: ccfe3be07f8ed913fea474a5de65396f3763f233 SHA-256: 7e9d19ce60a0bb2f17c5f8306967c7c4978bd74175fdd23edd97ad788177cb9d

134 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File T1566.001 Spearphishing Attachment T1071.001 Web Protocols

The PDF contains embedded JavaScript with an eval() call and a prototype pollution pattern, indicating malicious intent. This script is likely responsible for downloading and executing a second-stage payload. The presence of embedded files and JavaScript actions points towards a common PDF-based malware delivery mechanism.

Heuristics 9

Prototype-pollution JavaScript pattern high CVE related PDF_JS_PROTOTYPE_POLLUTION

PDF JavaScript mutates object prototypes while also referencing privileged or sensitive PDF APIs. This tracks a modern PDF exploit technique family without assigning an unverified CVE.
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution (matched inside decoded stream)
Embedded script payload in PDF stream medium PDF_EMBEDDED_SCRIPT_PAYLOAD

PDF stream bytes contain an HTML/XFA <script> tag without accompanying Windows shell-execution primitives — common in accessible XFA forms but worth surfacing for analyst review.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
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. (matched inside decoded stream)
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. (matched inside decoded stream)
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic (matched inside decoded stream)
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.adobe.com/xfdf/
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/mm/
- http://purl.org/dc/elements/1.1/

Extracted artifacts 11

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`embedded_file_obj0071.bin` `c4a2ec74ca8f1dfaa45dd3b7383eff8d3b021c20fd011a639ffc912925a5b957`	pdf-embedded-file	PDF EmbeddedFile object 71 at offset 0x3812A	162 bytes
`embedded_file_obj0072.bin` `24cfc8580a0aeeb823df4a41a72e6e9febfa92b7f04c1c9c7257161b00d36fe5`	pdf-embedded-file	PDF EmbeddedFile object 72 at offset 0x3821D	27637 bytes
`embedded_file_obj0073.bin` `a828fbf4b6ca7dab6a88b8274e1ad367565cf21c491d5a482816566edd0d05cc`	pdf-embedded-file	PDF EmbeddedFile object 73 at offset 0x38DA4	57789 bytes
`stream_001_off00000122.js` `4a409b2fddbee53663c4b1fc7a01d27382db2cfab9d63576c2032bd7d7a0be56`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x122	2174 bytes
`stream_002_off000004c1.js` `ecbceaec548fb0df0891fa2591b5a372563e11a0b1320558a9dda222e8dd2898`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4C1	1356036 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s). Carved artifact contains 2 long base64-like blob(s).
`stream_003_off00031035.bin` `f673f2ded5f7bd6ace6147730a10650df74e089bf95799b4e3f306f70f770ef1`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x31035	2855 bytes
`stream_004_off00031379.bin` `be8e4a6f1ebc01339476c115e3a2dbcb28cf6f690a32975f8c0f3c93ffd34b6b`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x31379	1399 bytes
`stream_005_off0003158b.bin` `bcd7cc5d12ad02bdea1efe98a9563cfd516aa11bf53162117d379c392adf51ba`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3158B	26271 bytes
`stream_008_off00033bc2.js` `529357503ec67b623d2a12816cdeea62bd639f2b4ff4e568b01c96cc3f5bfc6f`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x33BC2	1363 bytes
`stream_009_off00033da0.js` `e985b5df65c8c3cf732a9074b575fbc594c1c7f0bccc0994182ec7e5c0f7308a`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x33DA0	902 bytes
`objstm_0010_00.bin` `05ad09009cbdc1035dfef01629fd1cc01effbc2003372d55f5b018b50ca26863`	pdf-objstm-decoded	PDF /ObjStm 10 0 obj (inflated)	7148 bytes

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