Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7e9526033b89306…

MALICIOUS

PDF

39.2 KB Authoring application: Pdftk
MD5: f1e9a0cb7d4c2307b267571af0cd5312 SHA-1: eeaac10c21a954711d5cc96ba403f803d08043e7 SHA-256: c7e9526033b893061a28869cd104a17e5825ae412999d13c94706df836540bc7
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF file contains a large number of embedded links to external PDF documents, a technique often used for SEO manipulation or to distribute malicious content. The ClamAV detection and ML classifier strongly indicate maliciousness. The document body, though heavily corrupted, appears to reference ACCA exam information, suggesting a potential lure for students or professionals.

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://nancywijnants.com/uploads/1/3/0/7/130739906/796087.pdf
    • http://casparscatering.com.au/uploads/1/3/0/6/130621335/2335876.pdf
    • http://pyright.net/uploads/1/3/0/6/130620853/feziguwajalivot.pdf
    • http://eternity-games.com/uploads/1/3/0/5/130540472/luviligajugek.pdf
    • http://jasonseto.com/uploads/1/3/0/7/130776594/4725240.pdf
    • http://thoughtgumbo.info/uploads/1/3/0/6/130604048/lezugapewu.pdf
    • http://bartschcchs.com/uploads/1/3/0/3/130324340/6078438.pdf
    • http://www.daniellegrayart.com/uploads/1/3/0/5/130589442/vubejab.pdf
    • http://xplorcolombia.com/uploads/1/3/0/8/130813846/e1446630.pdf
    • http://www.greenweddingboutique.co.uk/uploads/1/3/0/4/130435581/jupekazo.pdf
    • http://mirrorinyourattic.com/uploads/1/3/0/5/130543261/bugixubap.pdf
    • http://eykx.com/uploads/1/3/0/6/130639924/9930c4ad0.pdf
    • http://saloteflorist.com/uploads/1/3/0/7/130739037/5447309.pdf
    • http://www.limosinkaty.com/uploads/1/3/0/3/130379517/xivejonufeziwo-teziziviwoge-dafibat.pdf
    • http://mybodymysoul.org/uploads/1/3/0/4/130483397/jobuvogop.pdf
    • http://filacommonwealth.com/uploads/1/3/0/4/130489604/3892864.pdf
    • http://rewiesapp.net/uploads/1/3/0/4/130436007/9159900.pdf
    • http://mail.tidaleffects.net/uploads/1/3/0/5/130551449/2001428.pdf
    • http://lamplepost.com/uploads/1/3/0/6/130639591/jiwukuwat.pdf
    • http://dreamcarzcollectiblediecastmodels.com/uploads/1/3/0/4/130483924/monuragofadexu.pdf
    • http://www.fremontinstruments.com/uploads/1/3/0/7/130740184/3812c361856ac3a.pdf
    • http://louisemottram-accounting.co.uk/uploads/1/3/0/6/130621244/dusaladik.pdf
    • http://www.buttonillustrations.co.uk/uploads/1/3/0/5/130588796/jebuzisoda-reganaxamuvaf.pdf
    • http://norkhilausplants.com/uploads/1/3/0/7/130740184/f7ec7.pdf
    • http://rcstudios.co.vu/uploads/1/3/0/2/130272330/130272330.html#acca+exam+timetable+dates+2018

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003395.bin
daf1e59e1a82564d502669034ba251496387d4961dbce0e861f79fa1e1ee0f68		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3395 8780 bytes

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