Malicious PDF — malware analysis report

Static analysis result for SHA-256 35f3149d6a507b16…

MALICIOUS

PDF

50.0 KB Authoring application: Smallpdf Desktop
MD5: 9cc154d2745caf3986b9d48020bf80cd SHA-1: f8ceadd592ba315778f633ab2f0aa8eaa6a2ed10 SHA-256: 35f3149d6a507b160fd7b6506cacd766398b72f1441ba805ce782c3788cb4e66
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically related to phishing or traffic redirection. The embedded URLs are the primary indicators of compromise, likely leading to further malicious content or phishing pages.

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://thebasicist.com/uploads/1/3/0/4/130488141/3ee2caf9a902.pdf
    • http://offerup-item-details9480298.com/uploads/1/3/0/5/130539899/254d239.pdf
    • http://vallonzek.com/uploads/1/3/0/7/130739520/f2c9ea4be42.pdf
    • http://thepinstation.com/uploads/1/3/0/3/130323210/dakafu.pdf
    • http://nirvana-estates.com/uploads/1/3/0/5/130540159/3612942.pdf
    • http://mundotainos.com/uploads/1/3/0/5/130543054/c029dc.pdf
    • http://clintmorris4layton.us/uploads/1/3/0/7/130740046/tapagaret.pdf
    • http://thenewmathclub.com/uploads/1/3/0/2/130272270/a2a48e65e.pdf
    • http://foofadiamonds.com/uploads/1/3/0/6/130604708/33dcde04.pdf
    • http://mikebarnescoach.com/uploads/1/3/0/4/130476572/zasigetareres.pdf
    • http://almostasecondgrader.com/uploads/1/3/0/6/130604923/7bf99.pdf
    • http://sisu2020.org/uploads/1/3/0/6/130639807/9826579.pdf
    • http://keith-allred.com/uploads/1/3/0/8/130873710/5981678.pdf
    • http://mraducanu.com/uploads/1/3/0/8/130874252/7438060.pdf
    • http://thedonald2020.co/uploads/1/3/0/5/130550874/wizifekunejig.pdf
    • http://musicresources.church/uploads/1/3/0/5/130551607/7b28d0.pdf
    • http://billyjackray.com/uploads/1/3/0/2/130291662/legogaruno-surusipitij-fetak-zovusebatuj.pdf
    • http://genxtraining.ca/uploads/1/3/0/2/130287932/2f9a78a2.pdf
    • http://blacktreelofts.com/uploads/1/3/0/6/130621051/130621051.html#african+continental+free+trade+agreement+document

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000f7b.bin
e217680a46b4201344e140b104f8659cf52001001b87befb700524854423c2ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B 8476 bytes

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