PDF malware analysis — malicious · 2c204515e179e16c

MALICIOUS

PDF

7.4 KB Created: 2009-01-35 62:12:26 Authoring application: Adobe

MD5: 5be832fbf8e5bb40ca3c1299695b000f SHA-1: 4dab6c4860b3eb1948f1eadfc46a2c68b774ac7b SHA-256: 2c204515e179e16cada9abaf86aaa2fd430db53f769cf6ffd1d56aa181c2fe0f

338 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file is malicious, as indicated by multiple critical heuristic firings related to known PDF exploits (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659). These exploits leverage embedded and obfuscated JavaScript, including the use of `eval()` and `unescape()`, to achieve code execution. The primary function appears to be downloading and executing a secondary payload, consistent with a dropper functionality. No specific malware family could be confidently identified.

Heuristics 9

media.newPlayer — CVE-2009-4324 critical CVE exact CVE_2009_4324

PDF JavaScript calls media.newPlayer — CVE-2009-4324 is a use-after-free in Adobe Reader's multimedia plugin triggered by media.newPlayer(). Actively exploited as a zero-day in December 2009. (identified after JavaScript deobfuscation)
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)
Collab.collectEmailInfo — CVE-2007-5659 critical CVE exact CVE_2007_5659

PDF JavaScript calls Collab.collectEmailInfo — CVE-2007-5659 is a buffer overflow in Adobe Reader triggered by a long argument or heap-sprayed message field passed to Collab.collectEmailInfo(). Part of a series of Acrobat JS API exploits. (identified after JavaScript deobfuscation)
ClamAV: Pdf.Dropper.Agent-7243641-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7243641-0
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.

Extracted artifacts 8

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0032_000.js` `87098e6566516f79e12f68f6d31b26f0079e80e599224ec352fea82e89c1381f`	pdf-javascript-stream	PDF /JS object 32 at offset 0x42A	135 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0034_001.js` `19f480276d1425ea034f59ba515edb654488ab3843c611a34092af404752ab4c`	pdf-javascript-stream	PDF /JS object 34 at offset 0x4EB	142 bytes
`javascript_obj0036_002.js` `13e09039f9f17067046e953c6f9d84f15f9e169dbee59e0385ae619eb3fda28e`	pdf-javascript-stream	PDF /JS object 36 at offset 0x10B	163 bytes
`javascript_obj0038_003.js` `7a546a5e0a43a62f2ffb60bad2d2024e94b42405a9e1599dcbeec1bd5821dc50`	pdf-javascript-stream	PDF /JS object 38 at offset 0xC59	182 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0078_004.js` `168d2e39780fe843343931ada9105b8a624cc1777951b07b665e3bad3bd90eb0`	pdf-javascript-stream	PDF /JS object 78 at offset 0x7C	49 bytes
`legacy_pdfkit_stage_000.js` `94791f39b750da448dfeae7930e0902d48e2f36813247d9a2574a6714df29eb9`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5E5	1634 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_001.js` `0f3bda0ea2e07f6bab82148ac0b0ac8f46226ad48b02dd194990645dedc706c4`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xD99	1800 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 3 eval/decoder/string-building token(s).
`legacy_pdfkit_stage_002.js` `125c6618d694cbd51ff453ef4049e627fd93bbc3011c4556c8c5c5d94ded3544`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x1403	2938 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 6 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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