Malicious PDF — malware analysis report

Static analysis result for SHA-256 363d784b61d6253f…

MALICIOUS

PDF

35.8 KB Authoring application: LibreOffice
MD5: 18cf9083b239139a62ee21901814b0b6 SHA-1: 416aeb0961d5588888b61ebcdb0932750ac6f659 SHA-256: 363d784b61d6253fd0df974eca5e407d4e5269ff0e1234e48afd93e696fa2618
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing 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. No scripts were extracted, and the document body content is heavily corrupted, making it difficult to ascertain a specific lure beyond the link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://occamsraiser.com/uploads/1/3/0/5/130590431/f01f7aa82b5e37.pdf
    • http://artsdatascience.org/uploads/1/3/0/3/130313249/4f6e01ea.pdf
    • http://boganesque.com/uploads/1/3/0/6/130621896/105cf9884692.pdf
    • http://clonetainer.com/uploads/1/3/0/4/130489742/3544488.pdf
    • http://www.heathers-sweet-treats.com/uploads/1/3/0/7/130775443/55980912.pdf
    • http://www.rockymtnbernedoodlesofthesouth.com/uploads/1/3/0/6/130621940/gidijenukemenu.pdf
    • http://74-123-77-158.mgwnet.com/uploads/1/3/0/5/130550832/minewum-sizapuj-rivixisasopu-boradomerumizi.pdf
    • http://fitosrestaurant.com/uploads/1/3/0/2/130288410/1af56bf135b3870.pdf
    • http://ellenyahnke.com/uploads/1/3/0/5/130550768/2806f.pdf
    • http://nude722.space/uploads/1/3/0/7/130775536/6688707.pdf
    • http://geelongphoto.com/uploads/1/3/0/6/130604728/5957647.pdf
    • http://84291.atkhn.com/uploads/1/3/0/4/130483204/64e06f.pdf
    • http://mail.swimrmal.org/uploads/1/3/0/6/130604027/xedixive-gexolo-rewigiwudilug.pdf
    • http://daviddegennaro.com/uploads/1/3/0/5/130551349/1c30ddba15.pdf
    • http://wonderful-tw.net/uploads/1/3/0/6/130621706/pigaratunimadek.pdf
    • http://encore00037.voyagerwebsites.com/uploads/1/3/0/8/130874129/130874129.html#subject+pronouns+and+possessive+adjectives+lesson

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003006.bin
cca0de271fe9ad467aa801d8ec6cc024efe5c18a145d6e2e3af1eac72cbc5dac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3006 8264 bytes

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