Malicious PDF — malware analysis report

Static analysis result for SHA-256 602a425728b2846c…

MALICIOUS

PDF

39.7 KB Authoring application: Pdftk
MD5: f259caf3c43369682298bb629a042ac9 SHA-1: e05dc8f9efca6b3f61c219aa87860b35055b0b03 SHA-256: 602a425728b2846cc3fb7e35f23dcea1d99d5c73336fc414878965c5657524d2
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links to other PDF files, a technique often used for SEO manipulation or to redirect users to malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. The embedded URLs are the primary indicators of compromise, suggesting a redirection chain to further malicious payloads.

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://koasports.com.au/uploads/1/3/0/3/130313152/9536262.pdf
    • http://tailormadeventures.com/uploads/1/3/0/4/130483811/vojonab.pdf
    • http://alloexo.store/uploads/1/3/0/5/130588613/7108441.pdf
    • http://discoverjoplinmo.com/uploads/1/3/0/6/130621068/4703300.pdf
    • http://dearmormonbishops.com/uploads/1/3/0/7/130739093/pubiloremaj_sazul_litamoxetiriwux.pdf
    • http://thatitguru.com/uploads/1/3/0/3/130313200/7190907.pdf
    • http://eliteauctiongroup.com/uploads/1/3/0/6/130604344/372c068ebc.pdf
    • http://ironlabconstruction.com/uploads/1/3/0/6/130640194/dumisadog.pdf
    • http://autodiscover.camppepper.com/uploads/1/3/0/5/130590666/a6e60ccaa93e72.pdf
    • http://webmail.seethejoy.net/uploads/1/3/1/0/131070852/rodigoxa.pdf
    • http://minecraft.marsw.tw/uploads/1/3/0/8/130814596/migemigikiwobiv.pdf
    • http://hitprosource.org/uploads/1/3/0/6/130604305/lomoxubazarekem-luwasijisexiz-kavexojomu-fakejijurovimo.pdf
    • http://www.smokyhillcheer.com/uploads/1/3/0/9/130969427/nobiga-kuwejupetob-jazinobeximi.pdf
    • http://www.virginiabeachfishing.org/uploads/1/3/0/5/130541837/3f9b23efcf6a2c2.pdf
    • http://peteandlily.com/uploads/1/3/0/7/130776250/fivaluson.pdf
    • http://host19.carmichaelnl.com/uploads/1/3/0/5/130545573/130545573.html#how+to+teach+english+vocabulary+to+beginners

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004115.bin
c51aa5dd9c55eaa0a2674f1b43cd99e866f04dd99b705711e0cc29293b756dd7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4115 7804 bytes

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