Malicious PDF — malware analysis report

Static analysis result for SHA-256 7db2c7c6880b9e1f…

MALICIOUS

PDF

36.3 KB Authoring application: pstoedit
MD5: b107adccd6ca122cf337f9d962c86223 SHA-1: 6b51fb30c7c1f73681ace2dd823a18b9709358e2 SHA-256: 7db2c7c6880b9e1fa8eb51482600b380cf4e17afa41e1c7a1896e697c4dc8451
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 to other PDF files, as indicated by the PDF_SEO_LINK_FARM heuristic. This technique is commonly used in phishing campaigns to distribute malicious content or redirect users to fraudulent websites. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports the phishing and malicious intent. No scripts were extracted from this sample.

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://news.wildmillers.com/uploads/1/3/0/2/130287394/gamapopunivul.pdf
    • http://saltcitysoccer.com/uploads/1/3/0/3/130379067/momava.pdf
    • http://www.dsmarcscreteil851239509.fr/uploads/1/3/0/7/130739895/judinunuvitirufulos.pdf
    • http://myconflicts.net/uploads/1/3/0/2/130292110/nirap_mafudone_vujumisigame.pdf
    • http://aiofyou.org/uploads/1/3/0/5/130588921/7116e4.pdf
    • http://nationalrpoclinic.com/uploads/1/3/0/6/130604286/a3c5fbc2.pdf
    • http://newnextsf.com/uploads/1/3/0/3/130313145/2700428.pdf
    • http://echoparkpsychotherapy.com/uploads/1/3/0/6/130621451/2827228.pdf
    • http://oppenheimerindustries.com/uploads/1/3/0/5/130539553/zinoliwobufug.pdf
    • http://fabricfrostingandfrills.com/uploads/1/3/0/6/130640092/8434463.pdf
    • http://nw-oregon.net/uploads/1/3/0/6/130621446/cb07d3692f7ff.pdf
    • http://northscottsdalevacationrentals.com/uploads/1/3/0/4/130435982/refokenepafoku.pdf
    • http://thesafereturns.com/uploads/1/3/0/2/130288554/2715103.pdf
    • http://hypnose-kinderwunsch.com/uploads/1/3/0/3/130379101/130379101.html#belimo+6+butterfly+valve

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000028a5.bin
a08d0169bb72b2efce47244446e7ffe5a43f73bda0d0877c809b023374718bb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28A5 8008 bytes

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