Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee3b3223e1f755e1…

MALICIOUS

PDF

39.6 KB
MD5: 0a6835a8e14b03726ab512dadd9e6836 SHA-1: a451e36c2a8e42d964ee7618bac1565a345b6c31 SHA-256: ee3b3223e1f755e1c1c9265f767b0b83817395b4357aa3580045b910c83e0022
186 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.001 Malicious Link T1204.002 Malicious File

The PDF contains embedded JavaScript and U3D content, triggering critical heuristics for CVE-2007-5659 (Collab.collectEmailInfo) and general PDF exploit detection. The presence of deobfuscated JavaScript files suggests the execution of malicious code. The primary attack vector appears to be exploiting a known Adobe Reader vulnerability to run these scripts, which likely download and execute further payloads.

Heuristics 7

  • 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)
  • U3D/3D content in PDF — Adobe Reader 3D parser CVE-family indicator high CVE related PDF_U3D_CVE_RELATED
    PDF contains U3D (Universal 3D) or 3D annotation content — CVE-2011-2462 and CVE-2009-3953 are critical vulnerabilities in Adobe Reader's U3D processing that allow arbitrary code execution. U3D content in PDFs is extremely rare in normal documents.
  • ClamAV: Pdf.Exploit.Agent-35903 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-35903
  • 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.
  • syncAnnotScan annotation-staging primitive low PDF_FOXIT_SYNCANNOTSCAN
    PDF JavaScript calls syncAnnotScan() — a no-op annotation-enumeration primitive used by exploit-kit JavaScript to stage payload reads from annotation /Subject fields before eval(). Not a vulnerable sink itself; rarely seen in legitimate PDFs. (matched in decompressed stream)
  • 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0007_000.js
860eae5f96eb426380281c575a089242b50523bbb4bbb8dd765e582cd9c07d2e
pdf-javascript-stream PDF /JS object 7 at offset 0x1A4 294 bytes
legacy_pdfkit_stage_000.js
e2bc4c1bf6638a0b578911f14a65c9ead5dad4e3773442001ee1c650fdc2b785
deobfuscated-js z-percent hex-pair decoded JavaScript at offset 0x2EF 5411 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 5 eval/decoder/string-building token(s).
legacy_pdfkit_stage_001.js
6285889795ad69a1f524ffe136a4a6fc7941eef404a32fb6793dba450ff83729
deobfuscated-js repeated-marker hex decoded JavaScript at offset 0x2EF 12877 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s). Carved artifact contains 1 long base64-like blob(s).
u3d_00_off000031fd.bin
db166b7bf539ceb527a321927dc7262838bbe91b146a4aa26884d46ee5696f20
pdf-3d-stream PDF U3D 3D stream at offset 0x31FD 27443 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact entropy is 7.99, consistent with packed or encrypted content.