PDF malware analysis — malicious · 3e484695137ed60f

MALICIOUS

PDF

12.9 KB

MD5: fd8fe03842b0cca7bded876629cd219f SHA-1: 05cbcaa8e4bb54f9415d4fd7fd433bb1750ce615 SHA-256: 3e484695137ed60feb93a8af36b49c7aa03e992085446615a016d9402e589027

78 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, triggered by the CVE-2007-5659 heuristic firing on `Collab.collectEmailInfo`. This JavaScript is likely used to download and execute a second-stage payload, as indicated by the suspicious extracted JavaScript files. The attack pattern involves exploiting a known PDF vulnerability to achieve arbitrary code execution.

Heuristics 4

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)
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `1847af0a099665b6ac45af66402e56ed64237a1b287618ee3d6643267fda6f35`	pdf-javascript-stream	PDF /JS object 7 at offset 0x19D	343 bytes
`legacy_pdfkit_stage_000.js` `ab926b680c83087aacd43ddc891706a0e258443e38bde218dbe4942608268663`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	12659 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`legacy_pdfkit_stage_001.js` `bd3442d6b067cead8f424ffa4d161b8da3453d3b5d186d7468067f17334f3fd3`	deobfuscated-js	repeated-marker hex decoded JavaScript at offset 0x2F0	5265 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 5 eval/decoder/string-building token(s).

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