Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c0083277e4831e2…

MALICIOUS

PDF

41.0 KB Authoring application: OpenOffice Draw
MD5: 9c1cbdba9f98ca73f4fee8a0e6417e2a SHA-1: 4f1ba38f07d711f6ca2d0710068d71a3d0350eda SHA-256: 7c0083277e4831e2170f776fe037b237781aed257439b58cb4cc9d86c71f88ff
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malware. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URLs are the primary IOCs, suggesting a campaign to drive traffic to these external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://ps163taskforce.org/uploads/1/3/0/3/130313213/64b4f9.pdf
    • http://riverlodgervpark.com/uploads/1/3/0/3/130323219/vokidu.pdf
    • http://victormorrowshow.com/uploads/1/3/0/6/130639580/e46b85b1.pdf
    • http://rvrepairaustin.com/uploads/1/3/0/3/130379363/7522653.pdf
    • http://kdstudios.net/uploads/1/3/0/4/130476417/1139813.pdf
    • http://profesionallashes.com/uploads/1/3/0/6/130620232/1fb8709f97.pdf
    • http://asiamarketcorp.com/uploads/1/3/0/5/130545194/d1b61cfee3df.pdf
    • http://edtnetworks.com/uploads/1/3/0/6/130639162/9013170.pdf
    • http://michellejestersite.com/uploads/1/3/0/2/130271159/birajox.pdf
    • http://natationlaval.com/uploads/1/3/0/7/130740374/2507539.pdf
    • http://nevingtonwarmuseum.weebly.com/uploads/1/3/0/4/130435884/c4c9bd230a.pdf
    • http://mistress-death.com/uploads/1/3/0/6/130621666/a7928112df79d7.pdf
    • http://drpatty.net/uploads/1/3/0/5/130539366/130539366.html#freemasons+for+dummies

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012c8.bin
a02f253756df74593e47f4fe83623b1e03f9b9f091cc9302c0417903d7415be6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12C8 8180 bytes

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