Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6ce3b0900c5125c…

MALICIOUS

PDF

31.9 KB Authoring application: Soda PDF
MD5: f55eb11a2a3096300d246ebd18118d60 SHA-1: 4ff2abcbd7146ece003790f1ef1daa06c6d8a4b2 SHA-256: b6ce3b0900c5125c45435ea7af6562607ebfbc9f2d3a6c23506b841525f6fc75
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded external links, a technique often used for SEO spam or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body appears to be corrupted or heavily obfuscated, but the presence of numerous links points to a link-farming or redirection attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://parmaohiomasonry.com/uploads/1/3/0/4/130476579/takisadupobexajulu.pdf
    • http://metawaygroup.com/uploads/1/3/0/5/130590339/notixe.pdf
    • http://www.kowbiemedia.com/uploads/1/3/0/3/130324340/nabej-jigamelorogul.pdf
    • http://dandmsalesofflorida.com/uploads/1/3/0/3/130313434/lapageg-gomeveto-zujesodoz-wovevuf.pdf
    • http://issseemsciencesymposium.com/uploads/1/3/0/7/130776692/podexakafupefu.pdf
    • http://mrlowderman.com/uploads/1/3/0/5/130551823/bb616bad0.pdf
    • http://fallriverreo.com/uploads/1/3/0/7/130739567/tibivekag_vusit_pibitinavi.pdf
    • http://downforacure.org/uploads/1/3/0/7/130740127/34fcf.pdf
    • http://danielrudin.com/uploads/1/3/0/5/130588342/zapenudosotaxowus.pdf
    • http://unitedcraftgrowers.com/uploads/1/3/0/5/130551041/d86bcbc9b6b0.pdf
    • http://www.nelslehtinen.com/uploads/1/3/0/4/130476320/130476320.html#age+of+empires+asian+dynasties+cheat+codes

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002504.bin
5547746a9e1a88858d332abf3d7ba1e5e02e6f43fb782b0cdc934a4dbeb401e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2504 8348 bytes

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