PDF malware analysis — malicious · 44374e9394c32f99

MALICIOUS

PDF

3.5 KB Authoring application: l (via va)

MD5: 2bc70cbe941aa34bfce447e372a0ddcb SHA-1: fe5824ab4864386f62e238e80e6a55c77a1ba6f8 SHA-256: 44374e9394c32f99e97b4d8c6b2188c227897b67da2907479ba2d08a293de039

340 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1059.001 PowerShell

The PDF file contains XFA (XML Forms Architecture) which is known to be a vector for exploiting Adobe Reader vulnerabilities. Critical heuristics identified multiple CVEs (CVE_2009_4324, CVE_2009_0927, CVE_2007_5659, CVE_2008_2992) related to XFA JavaScript exploitation. The deobfuscated JavaScript in the 'xfa_hex_stage_000.js' artifact likely decodes and executes a secondary payload, as indicated by the 'PDF_EMBEDDED_SCRIPT_PAYLOAD' heuristic and the presence of an embedded binary file.

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.Exploit.Dropped-84 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-84
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
XFA form low PDF_XFA

PDF uses XML Forms Architecture — can contain script logic
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
`embedded_file_obj0004.bin` `bc92f59ab6c1af41fb3e5580402dd63c3fd97a3acf101ca06dbffd778bc22e05`	pdf-embedded-file	PDF EmbeddedFile object 4 at offset 0xE9	11266 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long base64-like blob(s).
`xfa_hex_stage_000.js` `0b3bffbe76d5bb7a4fd7f9c416e1fc8a97a9c5b4c7fb0520fdc998423a1f48f7`	deobfuscated-js	XFA hex-decoded JavaScript (decompressed, direct) at offset 0x678	4807 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 12 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).

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