PDF malware analysis — malicious · fc1a6a9439998a2f

MALICIOUS

PDF

102.5 KB

MD5: 24c4eea45e042188e11c290979004177 SHA-1: bb39a7696d697fc7ccb79d27c27805dacb8262c9 SHA-256: fc1a6a9439998a2f8b7197e74bac78f6edbc8d861f59a7c5e00939dbe5edb979

360 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File T1190 Exploit Public-Facing Application

This PDF file contains obfuscated JavaScript that leverages multiple critical CVEs (CVE-2009-4324, CVE-2009-0927, CVE-2007-5659, CVE-2008-2992) to execute. The JavaScript is identified as a character-table eval stager, indicating it's designed to deobfuscate and run further malicious code. The primary function appears to be downloading and executing a second-stage payload, as suggested by the stager nature and the detection as Pdf.Trojan.Agent.

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)
util.printf — CVE-2008-2992 critical CVE exact CVE_2008_2992

PDF JavaScript calls util.printf() — CVE-2008-2992 is a stack buffer overflow in Adobe Reader triggered by a long format-specifier argument. Widely exploited in the wild after disclosure. (identified after JavaScript deobfuscation)
ClamAV: Pdf.Trojan.Agent-36936 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Trojan.Agent-36936
Character-table JavaScript eval stager high PDF_JS_CHAR_TABLE_EVAL_STAGER

PDF JavaScript reconstructs an exploit stage by indexing into a small character table, appending hundreds of one-character fragments, joining the array, and evaluating the result. This static fallback fires only after the bounded decoder recovers an exploit-like stage, so it catches this obfuscation even when no single CVE API signature is available.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0076_000.js` `31cf9912e9b0a5cce2247521ce843ffb49e28b84dd1c0df489fb70719b5f3e47`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2C2	96372 bytes
`char_table_stage_000.js` `9f5a5776ab9f27f8469d44b19e12a6e090676497ba3ee5b89b7738837bef9641`	deobfuscated-js	char-table indexed JavaScript (PDF /JS object 76) at offset 0x2FB	3858 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 11 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

Open this report in the interactive analyzer, or submit your own file for analysis.