Malicious PDF — malware analysis report

Static analysis result for SHA-256 d75b3503955ae889…

MALICIOUS

PDF

67.6 KB Created: 2021-02-20 15:04:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 75124a8bd49f583d15b8f0c29416fd36 SHA-1: 4df8f4df84767fb7ec882d72b9feb0dc5507f881 SHA-256: d75b3503955ae88930d35f3b65f48e64f9588c615a6d97de57c099d550e77a7f
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://jacksth.ru/wix?keyword=eso+jewelry+writs+location PDF link annotation
    • http://bigno.space/zexejufiwf6zk.pdfIn PDF document text
    • https://cdn.sqhk.co/sunidoxil/ghic2ie/chicken_invaders_3_cheat_mod_apk.pdfIn PDF document text
    • https://zejenabo.weebly.com/uploads/1/3/0/9/130969472/95273.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/sOhgEUV/vipizagufalijukowejup.pdfIn PDF document text
    • https://tokuniti.weebly.com/uploads/1/3/4/3/134331772/lonep.pdfIn PDF document text
    • http://majubavilusuda.iblogger.org/man_city_wolves_match_report.pdfIn PDF document text
    • https://cdn.sqhk.co/beratinuga/aiiBucg/buwufuzakaxetaw.pdfIn PDF document text
    • http://idealica-official-it.website/inbound_delivery_note_report_sapx5od0.pdfIn PDF document text
    • https://cdn.sqhk.co/jaselavujuwi/P4gewjc/pumpkin_carving_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476421/normal_602d082f871be.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392472/normal_5ff6710b4928e.pdfIn PDF document text
    • https://cdn.sqhk.co/jagavibejabe/HgjGygh/sexagatisafaxedufate.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jatomije.rf.gd/91908981781.pdfIn PDF document text
    • http://fufagarafe.epizy.com/39244445105.pdfIn PDF document text
    • http://xesewopalokix.epizy.com/bsaci_guidelines_venom.pdfIn PDF document text
    • http://jonufinufezo.epizy.com/lixejebix.pdfIn PDF document text
    • http://rilenipavow.rf.gd/zee_tv_serial_song.pdfIn PDF document text
    • http://kovejenipo.epizy.com/85807107060.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_off0000cd63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD63 5020 bytes
SHA-256: d566358771bbc6a19184af5d81252e280e75bdb511859b9bce211349bba90daa
font_01_sfnt_off0000dea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA4 10184 bytes
SHA-256: 1b2832e7412476268275a50cf3e210f634595c2c43c7cdc45cb88577ccf3ead9