Malicious PDF — malware analysis report

Static analysis result for SHA-256 d392a829c31630d9…

MALICIOUS

PDF

41.0 KB Authoring application: OpenOffice Draw
MD5: 0e1ed81c7b80dbffacdf1ac4aed22bcb SHA-1: 16940e8eeab8ff95877408f3a711ab28a178ed86 SHA-256: d392a829c31630d90c5fdb3aaea7ab28e30397ff9ef9fb07c0f6801d7fcbd61d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a link farm pointing to multiple external PDF documents, a technique often used for SEO poisoning or phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs are likely used to distribute further malicious content or redirect users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://akankshanegi.net/uploads/1/3/0/6/130620528/lokunikoru_tibexagawon_wedezemunesul.pdf
    • http://e2bioconsults.com/uploads/1/3/0/6/130604193/8927b40bfb.pdf
    • http://roguepilots.com/uploads/1/3/0/4/130483959/7056376.pdf
    • http://mlyterdogstudio.com/uploads/1/3/0/7/130776756/714ec.pdf
    • http://npep.com/uploads/1/3/0/2/130289658/4065134.pdf
    • http://trustcld.net/uploads/1/3/0/5/130551661/a2c383ec.pdf
    • http://northwestuu.com/uploads/1/3/0/3/130312914/130312914.html#pathogenesis+of+ebola+virus+infection

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010a8.bin
0c0b3bbe2040af3dde13aaca6f6cf5f70b42d40a97b55d30ba798601a12a169f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10A8 7868 bytes

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