Malicious PDF — malware analysis report

Static analysis result for SHA-256 f86ba1f88976beb6…

MALICIOUS

PDF

45.1 KB Authoring application: Mobipocket Creator
MD5: 13c3deda62d1b64fd790ed7fa6f9df20 SHA-1: 8b383b56d46efbdbc5aa482670de8ea3db1f543e SHA-256: f86ba1f88976beb6430e4e9ad8e3780366637b73d8456e025c23ceb390f34493
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO manipulation or to distribute malicious content. ClamAV detected this as Pdf.Phishing.TtraffRobotInstall-7605656-0, and a machine learning classifier also flagged it with high confidence. The primary attack pattern involves redirecting users to a link farm, likely to distribute further malware or engage in phishing.

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://doctorheatherwood.com/uploads/1/3/0/2/130288448/1731093.pdf
    • http://parentexams.com/uploads/1/3/0/5/130546354/gedagetujavelumi.pdf
    • http://rpluscreativesmy.com/uploads/1/3/0/7/130738921/jepopopawapinid_foxogot_lifugexid.pdf
    • http://mypakalolochocolates.com/uploads/1/3/0/6/130620503/vudul_konepamafubaze_lenapivowopufar_rakeritapaseli.pdf
    • http://www.skytunestudio.com/uploads/1/3/0/8/130874029/pizatavilaniv.pdf
    • http://jimstack.net/uploads/1/3/0/5/130551063/6134584.pdf
    • http://canon-services.com/uploads/1/3/0/2/130291478/4466436.pdf
    • http://bobbysuttonrealtor.net/uploads/1/3/0/6/130604203/121bdd6c8a.pdf
    • http://shadowbendtest7.com/uploads/1/3/0/2/130288551/72a4368408991a.pdf
    • http://radjam.net/uploads/1/3/0/7/130739284/luzesorofiwivir.pdf
    • http://thestorefrontgallery.com/uploads/1/3/0/7/130776002/a0522daae2.pdf
    • http://lisascentralcoast.com/uploads/1/3/0/4/130483656/4789563.pdf
    • http://takeatriprentals.com/uploads/1/3/0/4/130478609/rojoxixidit-lawoponifisu.pdf
    • http://glitster.com/uploads/1/3/0/7/130738913/juwejovunufe_gibagoxexi.pdf
    • http://hnccleaning.co.nz/uploads/1/3/0/7/130775837/dulivazatuvuwod.pdf
    • http://vk-podarki.site/uploads/1/3/0/4/130436173/5492905.pdf
    • http://sentientmind.org/uploads/1/3/0/4/130483402/xarokobuniwosiku.pdf
    • http://moderntutoringandeducationservices.com/uploads/1/3/0/5/130589161/sonot_kapixinepipew.pdf
    • http://www.booneorganic.com/uploads/1/3/0/8/130814633/2313781.pdf
    • http://anotherj.com/uploads/1/3/0/5/130550951/gujaxaxiwowazojo.pdf
    • http://wildchild.dance/uploads/1/3/0/7/130739607/130739607.html#adansonia+digitata+pulp+extract
    • http://canon-services.com/uploads/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ebf.bin
6630fc979f614615a0038d9c1b6257a4f5b13aa0be92e18e90c168200e1b5a0e
pdf-font-stream PDF embedded font (sfnt) at offset 0x4EBF 8740 bytes