Malicious PDF — malware analysis report

Static analysis result for SHA-256 c212edee5fdab7b7…

MALICIOUS

PDF

75.2 KB Created: 2021-03-20 02:32:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 18f1851e13481d6d28d9c18ecd1ca221 SHA-1: 1523164502d2dcd5936cb98e58cf61e4ca9aaa0c SHA-256: c212edee5fdab7b7c40fe4544438342577fc85b2c94533c027264104f305f42a
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 https://soxebez.ru/wix?keyword=pathfinder+soul+gem PDF link annotation
    • http://fefikaniki.22web.org/game_theory_examples.pdfIn PDF document text
    • http://leftoutclub.com/vojurexe3qwkf.pdfIn PDF document text
    • http://reduslim-europa.site/44412731176vxrlw.pdfIn PDF document text
    • http://liolika-rsya.ru/jeff_king_soccer_playerw0v03.pdfIn PDF document text
    • http://lnstagram-helping-centre.com/modal_bottom_sheet_androidi7dko.pdfIn PDF document text
    • http://datingdate.site/37204880447gtc3o.pdfIn PDF document text
    • http://jakusavu.sportsontheweb.net/how_to_reset_my_pioneer_receiver.pdfIn PDF document text
    • http://nudevego.iblogger.org/repokuz.pdfIn PDF document text
    • http://spindlndou.space/erector_spinae_plane_block_cpt_codesztxz.pdfIn PDF document text
    • http://helps-lnstagramcopyrights-about.com/sintomas_trombosis_venosa_profunda_brazovzhy5.pdfIn PDF document text
    • http://nomenowunesazoz.scienceontheweb.net/34002585738.pdfIn PDF document text
    • http://kusafomidufe.mywebcommunity.org/cgeit_7th_edition.pdfIn PDF document text
    • http://lezigovedavide.getenjoyment.net/because_he_lives_amen_chords.pdfIn PDF document text
    • http://matras-24.ru/dummies_guide_to_climate_changepvvw9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wejuvono/the_ascent_of_money_documentary_download.pdfIn PDF document text
    • http://jewojov.epizy.com/ciao_adios_pagalworld.pdfIn PDF document text
    • http://sitirij.rf.gd/business_analyst_role.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/28030655226.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE528 5320 bytes
SHA-256: 55f3edba4dd911a91ab1481ee1743353fd29de0b5c54f26724f4873d204cb0d3
font_01_sfnt_off0000f71b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF71B 11556 bytes
SHA-256: 9baa65f6fa43450b916411b98a7ef5b1fde16fbb4904a237fcbf055b1095a26b