Malicious PDF — malware analysis report

Static analysis result for SHA-256 74a6115292a58eb9…

MALICIOUS

PDF

42.6 KB Authoring application: Mobipocket Creator
MD5: 7632465aeab33d9caf15cbf7e5e3c356 SHA-1: a11e59f93f1dbd2ff8fc973a5d073d8046889d71 SHA-256: 74a6115292a58eb97b67dc3a6e94baccf4be12b16dda499b7de29d73ccac422d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is identified as malicious by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule and ClamAV detection as Pdf.Phishing.TtraffRobotInstall. The document body contains numerous embedded URLs that point to external PDF files, suggesting a link farm designed to redirect users to potentially malicious content. The presence of these links and the nature of the heuristics indicate a phishing or malware distribution attempt.

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://missouriinstituteofhypnotherapy.com/uploads/1/3/0/4/130489253/sutuwuzizigutev.pdf
    • http://camposinsuranceagency.com/uploads/1/3/0/2/130270753/cf25c8f556c0.pdf
    • http://bendavidsonministries.com/uploads/1/3/0/6/130621285/ee7d06.pdf
    • http://nerdendo.com/uploads/1/3/0/5/130539021/a7d953f.pdf
    • https://polufezubupeb.weebly.com/uploads/1/3/0/3/130313063/rosugemubamu_mugojud_boregivovopek.pdf
    • http://columbiaperioalumni.com/uploads/1/3/0/6/130603979/1e1952c85.pdf
    • http://chewoncakes.com/uploads/1/3/0/5/130539403/130539403.html#microbiology+a+systems+approach+3rd

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001163.bin
88f9a2267e22fdfa3837ce51c6e0083a00d099e156fecd51c2abf968cb704230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1163 8872 bytes

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