Malicious PDF — malware analysis report

Static analysis result for SHA-256 74a381c97fc20999…

MALICIOUS

PDF

35.3 KB Authoring application: Solid Converter PDF
MD5: 1b55e0a5a0489f30c693308f45989649 SHA-1: bf7eeb38aeabb4dbe841d7df63f5b9859b1cd311 SHA-256: 74a381c97fc20999d6ae60541a719b68cff3fafafc0bf294b98f932f65b76d99
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, identified as a link farm, which is a common technique for SEO spam or phishing. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or distributing further malware. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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://bifemecanico.com/uploads/1/3/0/2/130271187/1b27834c96b2.pdf
    • http://prathamut.org/uploads/1/3/0/2/130289641/8301ea.pdf
    • http://courtbernstudios.co.za/uploads/1/3/0/4/130476880/gilufewuxoj.pdf
    • http://dhhstheatre.org/uploads/1/3/0/4/130488694/feromudolitex.pdf
    • http://newparanormalsociety.com/uploads/1/3/0/7/130740391/xilepulo.pdf
    • http://connorcopelandcreative.com/uploads/1/3/0/4/130483617/zitamowum-gilazitebe-lalirisuwez.pdf
    • http://noashome.com/uploads/1/3/0/5/130590026/512f8b4ac983a.pdf
    • http://minnesotanoncompetes.com/uploads/1/3/0/7/130776298/xagepepa-pibigu-lovazud-rawefubaz.pdf
    • http://mikewrong.com/uploads/1/3/0/4/130483769/xifikodo-gubajelav.pdf
    • http://migrationbot.ca/uploads/1/3/0/2/130287893/zatufe.pdf
    • http://zumecareers.com/uploads/1/3/0/4/130476344/fea6724aaec6d2.pdf
    • http://rptservices.org/uploads/1/3/0/7/130739221/xazamezoporopo.pdf
    • http://host193.carmichaelnl.com/uploads/1/3/0/5/130551219/130551219.html#mikrotik+vs+ubiquiti+wisp

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000316b.bin
755b9f8668ce752943da468baa4589c5a39fd724d78c772bd8ad1b71af251c39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x316B 8076 bytes

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