Malicious PDF — malware analysis report

Static analysis result for SHA-256 3867258403ff70b3…

MALICIOUS

PDF

37.5 KB Authoring application: Scribus
MD5: d387ff5a918e372f0f395bb9ca92e826 SHA-1: 1c4fb68d835c5900b38393cc49c6267a254aff61 SHA-256: 3867258403ff70b3a9c72c4bc27d0659914a4fb5fdc59c10c1f06bbe29d7df20
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also flagged this file as malicious, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall-7605656-0. The embedded URLs suggest a phishing or traffic redirection scheme.

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://hypnobirthingontario.com/uploads/1/3/0/8/130873795/donape-kudojowofub.pdf
    • http://el042.elrepco.com/uploads/1/3/0/7/130776006/3245672.pdf
    • http://mrskiriluk.net/uploads/1/3/0/6/130620968/vufitad.pdf
    • http://marys-boutique.com/uploads/1/3/0/7/130776795/mejinut-xejaperev-sajexe-majenumawid.pdf
    • http://voirin-bourgault.com/uploads/1/3/0/3/130313458/9409197.pdf
    • http://perfecttimingboutique.com/uploads/1/3/0/5/130550814/2189352.pdf
    • http://ecarsindia.in/uploads/1/3/0/7/130740622/293a76e.pdf
    • http://karasholtz.net/uploads/1/3/0/7/130775294/dagixofiwazi.pdf
    • http://starlight.solutions/uploads/1/3/0/6/130605357/ff8f78429588b3.pdf
    • http://www.kirstikoopmans.com/uploads/1/3/0/8/130874252/a8fde49.pdf
    • http://corporacioncampanab.com/uploads/1/3/0/5/130588827/fugefiwebefiga_lufopefav_vatevuba_dezuvedunoxu.pdf
    • http://www.moralish.com/uploads/1/3/0/4/130436426/b488d04be0a10.pdf
    • http://britishtitties.com/uploads/1/3/0/8/130813982/bizeteviminowo_zijivewara_zasajifizir.pdf
    • http://nationalbrainhealth.net/uploads/1/3/0/7/130775366/ad8d3.pdf
    • http://bartendersfetish.com/uploads/1/3/0/6/130604708/54edd30e2ec9.pdf
    • http://mta-sts.mail.jprye.com/uploads/1/3/0/8/130874458/nezomunaribajelevopo.pdf
    • http://a1991107xstreamtravel.xsideas.com/uploads/1/3/0/6/130640104/130640104.html#gram+panchayat+secretary+question+paper+pdf
    • http://corporacioncampanab.com/uploads/1/3/0/5/130588827/fugefiwebefiga_lufopefav_vatevuba_dezuvedunoxu

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000354a.bin
9cd4c760ac4f0bb4284ff1308cc1315701928ab46f7e91315c79188cf8938c4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x354A 8304 bytes

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