PDF malware analysis — malicious · eaf73e4c4c5957a3

MALICIOUS

PDF

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

MD5: 98d5041ae2bf779a00da8aa0ccfe1e45 SHA-1: 374f9ba03ddfecbeb364e65eac3e9b85c1130ebe SHA-256: eaf73e4c4c5957a390baee59f11145f6bdc3b0c5402a3b655267ce591708934e

278 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

This PDF file contains multiple critical heuristic firings indicating exploitation of CVE-2009-4324, CVE-2009-0927, and CVE-2007-5659. These vulnerabilities are leveraged through embedded JavaScript, which is obfuscated and uses eval() and unescape() functions. The script's likely intent is to download and execute a second-stage payload, although the specific payload and its destination could not be determined from the provided evidence.

Heuristics 8

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)
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` `e485ceee27b6b75cdd5cc527dedf6f3c1cce3a3306c0c11432ebd02a29b1416a`	pdf-javascript-stream	PDF /JS object 32 at offset 0x417	129 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0034_001.js` `5c15f93c0c49d5a665a6fa0c927fe96b283895eb216db9ce39e9d8b19d61414d`	pdf-javascript-stream	PDF /JS object 34 at offset 0x4D2	124 bytes
`javascript_obj0036_002.js` `5554b9a7c44dfebdfaa791664ee79963d7835e69f5ed39b582cc36ce2eaadce4`	pdf-javascript-stream	PDF /JS object 36 at offset 0xFF	133 bytes
`javascript_obj0038_003.js` `039131df7cdd8f6e0fafd5c49e66bbce46255b70934efc2310c74d757d3cabf3`	pdf-javascript-stream	PDF /JS object 38 at offset 0xC2F	158 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 eval/decoder/string-building token(s).
`javascript_obj0078_004.js` `7e5a33d745fd019fb29e76f9a13b1df3c59f3a1e9ae2af62b1a814c1219d037b`	pdf-javascript-stream	PDF /JS object 78 at offset 0x7C	37 bytes
`legacy_pdfkit_stage_000.js` `1024545106716daaa02e034d223f651f3d0221a00be99a899870a656fd15acc0`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x5BE	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` `2e6ae1b9b1054ec92bb00337e036feb6f984387dd30ff6d8d446c79ede9f1e81`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0xD57	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` `01d779dd0b36348b808642f97549a68a7a39ddfa7c0c069e0016de7b05d9beb4`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x13BF	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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