Malicious PDF — malware analysis report

Static analysis result for SHA-256 79f093623d6de774…

MALICIOUS

PDF

71.3 KB Authoring application: Mobipocket Creator
MD5: 9a3a651736ba8fb25479c70511008ec7 SHA-1: 9af9a2af277ef91a8077de20bb6c0251bb3df735 SHA-256: 79f093623d6de774dc38539f42083e7a3d8b620fb003d249459b9699c14ebead
168 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a phishing lure, employing urgency and a visual download button to entice users. It contains a mass of external PDF links, suggesting a link farm designed to distribute further malicious content or engage in SEO abuse. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to distributing further malware or phishing content via the embedded URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://dancetodaybiz.com/uploads/1/3/0/5/130544703/daniraxalimi-tavatirij-miditabika.pdf
    • http://villasdiamante.com.mx/uploads/1/3/0/6/130604725/6770461.pdf
    • http://mountephraimtaxpayersfirst.com/uploads/1/3/0/6/130621219/galuwozorara.pdf
    • http://casaservicesfinanciers.com/uploads/1/3/0/6/130604299/roliriwe_genimutamujigu_jebetev.pdf
    • http://sunnybottom.com/uploads/1/3/0/4/130436014/woxebuzumapogujini.pdf
    • http://brendascircle.pink/uploads/1/3/0/5/130539583/pupakipaja.pdf
    • http://cprsd2.com/uploads/1/3/0/6/130639629/pafonoxop.pdf
    • http://balancedwaw.com/uploads/1/3/0/6/130604982/9091ed1b582080.pdf
    • http://ghdate.com/uploads/1/3/0/5/130589199/1033308.pdf
    • http://withwhitandgraceblog.com/uploads/1/3/0/2/130289296/eefb7aa4baa5ea.pdf
    • http://juliejesternewman.com/uploads/1/3/0/7/130739012/130739012.html#aha+acls+algorithm+ventricular+fibrillation
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000013ec.bin
c87a9b26aaf20e3528e843573b6dca199f600aabe97e42494d1b94677a6cbdac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13EC 10556 bytes
font_01_sfnt_off0000dd63.bin
6dc6e07f93ae70488a19e8a398a1c6cda2f5723fc3d3cbe180c5afbb10c3611e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD63 2864 bytes

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