Malicious PDF — malware analysis report

Static analysis result for SHA-256 946d8098275ee675…

MALICIOUS

PDF

35.1 KB Authoring application: GIMP
MD5: 2435a35b92fdd83cb93afe7d08d7d95f SHA-1: 69eec79c6fa43e02327a511f897889b61e945c36 SHA-256: 946d8098275ee675b52d06d89f7e9f6cff2e9ec752fab2e441df026b299d5a23
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body mentions 'Cambridge guided busway route map' but also contains obfuscated text and URLs, suggesting a lure to disguise the malicious link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://microphonistbeats.com/uploads/1/3/0/4/130483273/gowemova-mazefoporewezi-kanedus-rabedugesizo.pdf
    • http://genxtraining.ca/uploads/1/3/0/2/130271207/7524691.pdf
    • http://mikelscottart.com/uploads/1/3/0/6/130604010/gudafakifovokeda.pdf
    • http://saltcitysoccer.com/uploads/1/3/0/6/130639841/dcd160011f9888.pdf
    • http://us.momotombochocolatefactory.com/uploads/1/3/0/4/130436033/130436033.html#cambridge+guided+busway+route+map

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001044.bin
bbe3712eaf87afbad63ae44d470fa76c3126af3420c33b7e8ae7cd3913fd6bd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1044 7680 bytes

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