Malicious PDF — malware analysis report

Static analysis result for SHA-256 1286851725ec85ec…

MALICIOUS

PDF

41.9 KB Authoring application: QPDF
MD5: d1ec3d60cdf1c618ad8fe718a63a3767 SHA-1: 8ca48975c6d789f938519d5d94b3a8a3fca184a3 SHA-256: 1286851725ec85ec1a62b830f10be3ee74e4af73c802dfd67ab14f816d4ba449
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute further malicious content. ClamAV and ML classifiers also flagged this file as malicious. While no scripts were directly extracted, the embedded URLs are the primary indicators of malicious activity.

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://musictheatercareers.com/uploads/1/3/0/2/130270799/9192153c7e823.pdf
    • http://bestconference.net/uploads/1/3/0/4/130483961/2700718.pdf
    • http://shardexplorers.com/uploads/1/3/0/4/130435546/add9f781.pdf
    • http://rickydemedeiros.com/uploads/1/3/0/6/130604112/raxef_gopujomilebef_widazuv.pdf
    • http://thriftmyhome.com/uploads/1/3/0/5/130589121/7311360.pdf
    • http://21stcenturyink.com/uploads/1/3/0/4/130483514/tisimekekejin.pdf
    • http://mightygoodentertainment.com/uploads/1/3/0/4/130476740/4985152.pdf
    • http://completebydesigncbd.net/uploads/1/3/0/2/130288577/jepusukifimuv.pdf
    • http://ckfacials.com/uploads/1/3/0/3/130313748/jowuw.pdf
    • http://mybrookfield.org/uploads/1/3/0/6/130605190/b37d770f3a3.pdf
    • http://taranakitimebank.nz/uploads/1/3/0/6/130639739/130639739.html#adobe+premiere+pro+free+video+transitions

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000127b.bin
dff14fa537efe39355cfe438db230ba5a78b37ea9e2a8ae498f9e4a7de7c7fa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x127B 8484 bytes

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