Malicious PDF — malware analysis report

Static analysis result for SHA-256 752895badb313ff6…

MALICIOUS

PDF

33.9 KB Authoring application: LibreOffice
MD5: 3f974e2a6f3aedfe9e939176e9d148a0 SHA-1: 41e32c9067fa3fb2deb54f601ccb2e6ec519d91e SHA-256: 752895badb313ff6d287e1f4ca099be76347ec07ac51dae91fbe18d5a108c4ce
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to host malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. The embedded URLs are the primary indicators of compromise, suggesting a campaign to redirect users to potentially harmful sites.

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://hostmaster.edballard.co.uk/uploads/1/3/0/6/130603928/sinujubafak.pdf
    • http://marketingforsalessuccess.com/uploads/1/3/0/7/130775228/kozitivanuleliruviv.pdf
    • http://freebetdirectory.com/uploads/1/3/0/6/130604341/pofidunozobe_sajad_nopojiguwusix_tijifolor.pdf
    • http://xhailmartinez.com/uploads/1/3/0/5/130588809/tafivugu-pugevunufika-nivekuvefamid-pumukujabavo.pdf
    • http://finallyfitabq.com/uploads/1/3/0/8/130873976/pejadanotilal.pdf
    • http://streetbrunch.com/uploads/1/3/0/6/130639889/xebinewiwuta.pdf
    • http://trawallaprimary.com/uploads/1/3/0/5/130542813/352855090.pdf
    • http://emilyyy.com/uploads/1/3/0/5/130551890/8991512.pdf
    • http://dgiindex.org/uploads/1/3/0/5/130588499/72e2021.pdf
    • http://modelsenden.com/uploads/1/3/0/6/130639561/9abd4021.pdf
    • http://mooseandmagpiefarm.com/uploads/1/3/0/2/130288542/sasugefisoruj.pdf
    • http://disarmingdoomsday.com/uploads/1/3/0/8/130813953/2921830.pdf
    • http://letsvartalaap.today/uploads/1/3/0/5/130551267/jawosed.pdf
    • http://camilo-leon.com/uploads/1/3/0/6/130639123/pibinug_noboxefegi.pdf
    • http://northeastwisconsinwelding.com/uploads/1/3/0/7/130738711/10268.pdf
    • http://baijingbox.com/uploads/1/3/0/6/130621608/pumejakiwo-javabos-pafuzikumuki.pdf
    • http://aletothechief.com/uploads/1/3/0/8/130813032/34dfb0f1171.pdf
    • http://britainchase.com/uploads/1/3/0/5/130551364/4ea4931de87e57.pdf
    • http://davebecker.org/uploads/1/3/0/4/130435514/mimelapexadiza.pdf
    • http://mjyoga.net/uploads/1/3/0/7/130740174/4013285.pdf
    • http://a1679303xstreamtravel.xsideas.com/uploads/1/3/0/6/130639038/130639038.html#bootstrap+file+upload+examples

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000023b6.bin
b94d16fa83f9b61ed567b7559e7f3bdc2dc496330ce1652887e634e3293e196c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x23B6 8140 bytes

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