Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f22d6bf9804fbc1…

MALICIOUS

PDF

87.4 KB Authoring application: Nitro PDF
MD5: d13c4eef1777903acdfd17e9c5f4ebe3 SHA-1: 2cb1abd00860285520fd1bf5a73047fb1c4ba802 SHA-256: 1f22d6bf9804fbc106470c28359d6265ec6913206d932ae3f7f22531e0ccf776
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links to other PDF files hosted on various domains, indicating a link farm or redirection scheme. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', suggesting a phishing or traffic redirection purpose. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

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://mich-interiordesignllc.com/uploads/1/3/0/2/130289797/fijozulogagubag.pdf
    • http://nakomahomesandland.com/uploads/1/3/0/5/130540128/getafevujojenugo.pdf
    • http://alpharettapestpros.com/uploads/1/3/0/6/130604561/37a7c4b2dfbe.pdf
    • http://rachelnamba.com/uploads/1/3/0/2/130288861/1b203.pdf
    • http://sansouciart.com/uploads/1/3/0/5/130543099/a49c0a7a.pdf
    • http://bmrwv.com/uploads/1/3/0/2/130273625/a328962fe44ce2.pdf
    • http://absystemsllcscam.com/uploads/1/3/0/6/130621937/130621937.html#yugioh+gx+duel+academy+codebreaker+cheats

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011bf.bin
b735a6c0b28414b83f11b84dcaa452b3f4b23f43095c5cb9096577b723e941e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF 9084 bytes
font_01_sfnt_off00006a2f.bin
98983989aee617804bfb2b69dc6f6f805939a98a2ee6a1190dcf619e05322181		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2F 16096 bytes

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