Malicious PDF — malware analysis report

Static analysis result for SHA-256 14443670c0aba98c…

MALICIOUS

PDF

36.2 KB Authoring application: pstoedit
MD5: 61834a5dcf68d3957f209a7e57137df5 SHA-1: c6f1c612109a393de43e8773b89345b23b052117 SHA-256: 14443670c0aba98c06dd0388e427cb42b9cb0642297541a4976f3d4a61c629f9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm designed to redirect users to potentially malicious content. ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection intent. The ML classifier also strongly flagged this PDF as malicious.

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://nvui.org/uploads/1/3/0/5/130540767/9396647.pdf
    • http://mommasinamood.com/uploads/1/3/0/6/130620326/ca05d3becc08b.pdf
    • http://texasfoodguy.com/uploads/1/3/0/6/130621865/tuzojeparital_timedonod.pdf
    • http://colo-ip58.mnemonix.com/uploads/1/3/0/6/130620345/wuzil_nuras.pdf
    • http://trcag.com/uploads/1/3/0/6/130621342/2bc3a24.pdf
    • http://ravagespa.com/uploads/1/3/0/5/130543772/9925960.pdf
    • http://webmail.catherineofsienaparish.org/uploads/1/3/0/7/130739711/folijipi.pdf
    • http://newaplusenvironmentalrestoration.com/uploads/1/3/0/4/130489241/4468572.pdf
    • http://eireneathens.com/uploads/1/3/0/5/130588443/kelibewaf.pdf
    • http://www.flawlessedinburgh.com/uploads/1/3/0/6/130620511/rulutizuzugedig.pdf
    • http://hanna-hr.com/uploads/1/3/0/5/130551472/430cbb5908.pdf
    • http://emilyburdettphotography.com/uploads/1/3/0/7/130776492/pokuguwokagi.pdf
    • http://tribemotif.com/uploads/1/3/0/7/130775808/lutovevomav_wagano_dofipakin_wobozizekipawo.pdf
    • http://www.dtapto.org/uploads/1/3/0/5/130542710/jelurume.pdf
    • http://thegreennetwork.net/uploads/1/3/0/6/130622111/2899215afd6ff5.pdf
    • http://www.downrivermortgageone.com/uploads/1/3/0/2/130287972/1267ea38ff9def.pdf
    • http://lgbt2012embassytirana.org/uploads/1/3/0/8/130874330/4168528.pdf
    • http://walkrunleap.com/uploads/1/3/0/3/130324050/naboxibetazewa-lizazev.pdf
    • http://terrasustainable.com/uploads/1/3/0/8/130874163/99dc25099136579.pdf
    • http://74-123-79-182.mgwnet.com/uploads/1/3/0/5/130539033/130539033.html#alberto+moravia+e+racconti+romani

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003062.bin
6a2cb850a11b58b61e5e7674ad4065e98abed89edf2d487dfce74ecd589e586e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3062 7936 bytes

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