Malicious PDF — malware analysis report

Static analysis result for SHA-256 42110f157544cab8…

MALICIOUS

PDF

54.5 KB Authoring application: ImageMagick
MD5: 2ccb6868a72cfd9392928e9aa4d35add SHA-1: cb41e6b4344f4b38f872b0d895f67a854ebd5578 SHA-256: 42110f157544cab8ea72b64eb4258048559b1780c27aaad247519f40932a2d33
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious File

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF and HTML files. The embedded URLs suggest a link farm designed to direct users to potentially malicious content. The ClamAV detection and ML classifier further support the malicious nature of this document, likely serving as a lure for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://4dverse.com/uploads/1/3/0/4/130476523/9130622.pdf
    • http://metoomvntinfo.com/uploads/1/3/0/6/130604516/7b678.pdf
    • http://agapeholisticaromatherapy.com/uploads/1/3/0/7/130739655/zepesasaxenixafupusu.pdf
    • http://northwestuu.com/uploads/1/3/0/2/130272552/130272552.html#chicago+manual+style+citation+example

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001099.bin
94acd78f9bf5fa7a7526f676c6fbc1448dbd351cdbdda9a90577ddbe09c2b67a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1099 8700 bytes

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