Malicious PDF — malware analysis report

Static analysis result for SHA-256 04443f4f5399e541…

MALICIOUS

PDF

54.2 KB Authoring application: Pdftk
MD5: 4ad550d93b90446d6d2e925ca1f08319 SHA-1: 4b60bbcbcf295561a5dafab0d37fa16c30c1484d SHA-256: 04443f4f5399e5419b37a9f173ece4e2d2f35701e1c17934344e277bd191c6dc
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to external PDF documents, a technique often used for SEO manipulation or to distribute further malicious content. ClamAV detected this file as Pdf.Phishing.TtraffRobotInstall-7605656-0, and a machine learning classifier also flagged it as malicious with high confidence. The document body text, though heavily obfuscated, contains references to 'Tafheem ul quran volume 6 pdf free download', suggesting a potential lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://robertandsteven2019.com/uploads/1/3/0/8/130814173/lanituxetajozisolu.pdf
    • http://blackmonmarshall.com/uploads/1/3/0/2/130287839/xozalojutirir.pdf
    • http://tarotofthehumanexperience.com/uploads/1/3/0/7/130775451/fexorimuxaf.pdf
    • http://emilianoevaleria.com/uploads/1/3/0/2/130288397/kanoremetik.pdf
    • http://tennisarena.net/uploads/1/3/0/6/130605302/losex-gabiwunovosiwor-pelipuzuvidot.pdf
    • http://chirpsofftheoldblock.com/uploads/1/3/0/6/130639173/vovotubuvirolu.pdf
    • http://lrmbarrelhorses.com/uploads/1/3/0/2/130272086/gabop.pdf
    • http://forsiouxfalls.org/uploads/1/3/0/8/130874130/3038274.pdf
    • http://www.thewayofthemotorcycle.com/uploads/1/3/0/3/130380084/2187531.pdf
    • http://stepsministries.me/uploads/1/3/0/4/130489241/e7f255adb.pdf
    • http://shredpics.com/uploads/1/3/0/6/130620579/keginuto-xoraw-gumideb.pdf
    • http://imranvj.ca/uploads/1/3/0/6/130639133/a56dad.pdf
    • http://agencia-de-empregos.com/uploads/1/3/0/3/130313429/gifigiluvivufilugi.pdf
    • http://www.dishingitupgame.net/uploads/1/3/0/4/130489771/4509892.pdf
    • http://zachbone.com/uploads/1/3/0/5/130551441/7682628.pdf
    • http://lunarica.net/uploads/1/3/0/5/130588445/dd8476a078.pdf
    • http://adlevo.io/uploads/1/3/0/7/130775013/gibuzobufiteb.pdf
    • http://nourishedwombyn.com/uploads/1/3/0/6/130604333/449ead.pdf
    • http://kylaconner.com/uploads/1/3/0/2/130271043/sereg.pdf
    • http://mahakipawa.co.nz/uploads/1/3/0/6/130640028/166107.pdf
    • http://minatangoboutique.com/uploads/1/3/0/5/130540405/bc0a6114.pdf
    • http://triosreadydentallaboratories.com/uploads/1/3/0/6/130639249/duliwak.pdf
    • http://digitaldocmd.com/uploads/1/3/0/2/130272585/130272585.html#tafheem+ul+quran+volume+6+pdf+free+download
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_001_off00004373.bin
88bffb8dc5117dcff567cc327de8397d7b3f4aa6dbca5faa920c08b4200e5063		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4373 27708 bytes
font_01_sfnt_off000073be.bin
341535b5d4e5648aca2663a8f40a111391a5922f1b038ab298675d810d9500f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73BE 7764 bytes

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