Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc3e0804faf8af92…

MALICIOUS

PDF

45.6 KB Authoring application: PDF Studio
MD5: d2378895628beb76b76e6c6fa1045356 SHA-1: 3ccfc72690ce33dc5d753ab35941cda073e798d0 SHA-256: cc3e0804faf8af92624652ea11d3c29373ba270932133d02ebfb6a4c57180189
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF documents, a technique often used for SEO manipulation or to distribute malicious content. ClamAV detected this as Pdf.Phishing.TtraffRobotInstall, and ML classifiers also flagged it as malicious. The embedded URLs are the primary IOCs, suggesting a campaign focused on redirecting users to potentially harmful content.

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://prathamut.org/uploads/1/3/0/7/130776228/8995819.pdf
    • http://speculos.ca/uploads/1/3/0/2/130291588/xixudamipatox.pdf
    • http://kiemtratenmien.net/uploads/1/3/0/6/130620391/e2cea158b6.pdf
    • http://nicoleedwardslimited.net/uploads/1/3/0/5/130550879/bugakeletuzu-pusivixijes.pdf
    • http://jesusloveforyou.com/uploads/1/3/0/5/130550787/bezokajosu-jovavofibipin-potobatuwojog-xemizumis.pdf
    • http://cameliascandles.com/uploads/1/3/0/6/130622042/vikejedetutug.pdf
    • http://securityprojects.be/uploads/1/3/0/5/130540296/8dda12b7d9.pdf
    • http://pipodasew.sexshop-extra.ru/uploads/2020/01/29/6b3e3c7c.pdf
    • http://skfinancieel.nl/uploads/1/3/0/6/130620443/fazowosenik.pdf
    • http://acceligen.org/uploads/1/3/0/5/130538992/jegesuf.pdf
    • http://2020blue.org/uploads/1/3/0/7/130739297/130739297.html#persuasive+essay+topics+for+high+school+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012b2.bin
04f80f4c4b158bb0def43b9d16f990c510101930a06007fb0971df1456b2cc04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12B2 8652 bytes

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