Malicious PDF — malware analysis report

Static analysis result for SHA-256 102309ec77c7158e…

MALICIOUS

PDF

28.3 KB Authoring application: LibreOffice Draw
MD5: 1d79793f48a860686989d1d1877d18e3 SHA-1: f6169bf3e15e089463c3e49fd48b4729bbebd25f SHA-256: 102309ec77c7158edf1cd516610f22b86d215e3d01d09fc345cee0303b821143
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO manipulation or to distribute further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for JavaScript execution or redirection to malicious sites.

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://paisleyscavaliers.org/uploads/1/3/0/5/130540296/kamolidonose.pdf
    • http://stanleycovington.com/uploads/1/3/0/5/130588492/tovatop.pdf
    • http://counsellingonline.biz/uploads/1/3/0/5/130547112/gosoxor_vobovuba_zazasepemoj_lunanip.pdf
    • http://xapu.koyko-mesto.com/uploads/2020/01/29/liwopeta_bewafirupikadi_junikasokatu_geposixebunav.pdf
    • https://gasasefen.weebly.com/uploads/1/3/0/2/130288483/nalone-fijof-timazifogenuwum.pdf
    • http://mjvsms.ca/uploads/1/3/0/5/130589000/97707b.pdf
    • http://troypriest.com/uploads/1/3/0/2/130271190/9481654.pdf
    • http://correagolf.com/uploads/1/3/0/6/130604764/91ceb558b.pdf
    • http://sweetestdreams.org/uploads/1/3/0/5/130551153/130551153.html#hamlet+character+map+worksheet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001192.bin
6c110e08594b93d4e0a6df2301cddc90402aedd62ad9a6a9a54be21825ee7a9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1192 7300 bytes

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