Malicious PDF — malware analysis report

Static analysis result for SHA-256 36aab4a4090ac852…

MALICIOUS

PDF

41.2 KB Authoring application: OpenOffice.org
MD5: 5c5571cce596d20cb7582d9b7576fe82 SHA-1: ea8c73b46199b03f734f1b4dd9df540dd38b2c37 SHA-256: 36aab4a4090ac852129aca612b3ebd8c9f2605e09e6b0e24c647bf814eabd405
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection of Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious classification. The primary attack pattern appears to be a link farm designed to redirect users to other PDF documents, potentially for SEO manipulation or to host phishing content.

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 https://magewifaxawepo.weebly.com/uploads/1/3/0/6/130604446/notixonobibu_leparewezazis_batujekelijub_bijafedoterored.pdf
    • http://quartzvanitydirect.com/uploads/1/3/0/2/130272613/gotov.pdf
    • http://as-ru.ru/uploads/2020/01/28/dd1bdd8eab57.pdf
    • http://noahsgiftsandgallery.com/uploads/1/3/0/2/130287890/noxoj.pdf
    • http://getthedriver.com/uploads/2020/01/27/marijomatati.pdf
    • http://starstuffwithstuartgary.com/uploads/1/3/0/4/130483872/nulagivamokojawinux.pdf
    • http://wam.woltag.com/uploads/2020/01/29/7fe8f6.pdf
    • http://carverarms.com/uploads/1/3/0/5/130589000/6946135.pdf
    • http://vintagefairedecor.com/uploads/1/3/0/2/130291803/cac9df5f3d.pdf
    • http://dlhp-solutions.com/uploads/1/3/0/5/130547038/277f65b4cee5302.pdf
    • https://maguniside.weebly.com/uploads/1/3/0/2/130289803/favokevebidifav-winivatusawowew-vekep.pdf
    • http://lali.lesnayazastava.ru/uploads/2020/01/28/fd4b01e7acf.pdf
    • http://mskeleta.com/uploads/1/3/0/2/130289239/130289239.html#bureau+veritas+sa+annual+report

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013a1.bin
81f1f2cf8a2d9db162523109c3d23a52c17ec0fa4e16409e094e69a90535d729		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13A1 9560 bytes

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