Malicious PDF — malware analysis report

Static analysis result for SHA-256 1df8829146b0abc7…

MALICIOUS

PDF

48.7 KB Authoring application: QPDF
MD5: dd6305d1eace45598685e3871c381165 SHA-1: 950adc28d16410d900755198a56b2a4510e21301 SHA-256: 1df8829146b0abc736dca19cb5cf48ec224e7bbc90bf9071233b682772e3cb1c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, identified as a link farm, which is a common tactic for distributing malware or directing users to phishing sites. The document body, though containing some garbled text, includes the phrase 'Tv sound bar reviews' and several URLs, suggesting a lure to a content-based phishing or malware distribution campaign. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports this assessment.

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://msandtherapist.com/uploads/1/3/0/6/130639126/7130701.pdf
    • http://fajujix.martinsembalagensam.com/uploads/2020/01/28/gilonubetudewag_peradamemejup.pdf
    • http://belindawabelo.com/uploads/1/3/0/4/130483350/gikupegebewe.pdf
    • http://starfishcenter.org/uploads/1/3/0/5/130550972/famal.pdf
    • http://mexicofolk.net/uploads/1/3/0/7/130739341/fukuva.pdf
    • https://tezajelevikik.weebly.com/uploads/1/3/0/5/130550690/bosesob.pdf
    • http://panazafan.fuse0000.online/uploads/2020/01/28/kufixasa_gezovonixamasu_dosudazigik_gubot.pdf
    • http://sista-dolls-vibrations.com/uploads/1/3/0/6/130621651/2157496.pdf
    • http://jinamerixa.labdo.net/uploads/2020/01/28/jexowinibon.pdf
    • http://zambiasafarihunting.com/uploads/1/3/0/4/130490218/130490218.html#tv+sound+bar+reviews

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000128c.bin
3e6a04482e80a30908a2d0d5591d1cd2e97136e468eded229eeecf5e6ba5d5d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x128C 9020 bytes
font_01_sfnt_off000076ce.bin
c7143368894299a997ed09f05024df052d964886bc902d598de4a6791c50751f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76CE 10292 bytes

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