Malicious PDF — malware analysis report

Static analysis result for SHA-256 385e24fd34551c20…

MALICIOUS

PDF

69.4 KB Created: 2021-02-26 04:36:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a62876c9c15fd313972ea5370f9aebac SHA-1: 552469df74cec586c66a2658a1679dcdcab7837c SHA-256: 385e24fd34551c20806bbbe1793e49bfff94f3998a95bed79b5324b5c2712a21
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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=dr+web+apk+pro PDF link annotation
    • http://adv-workshop.site/26688833020stwrt.pdfIn PDF document text
    • https://jevilorusijugif.weebly.com/uploads/1/3/0/8/130874204/aaee71a1fb7aa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390638/normal_5feb1a864f1d4.pdfIn PDF document text
    • http://tuimag.ru/where_does_just_lather_that_all_take_placejbb2s.pdfIn PDF document text
    • http://radapox.iblogger.org/gewofexatawi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478716/normal_60295c76d7d97.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/Fhjheij/sonoboko.pdfIn PDF document text
    • https://cdn.sqhk.co/momujolo/M5iicag/47410646217.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471686/normal_6003e18884076.pdfIn PDF document text
    • https://cdn.sqhk.co/nujamuxeg/c3hglgK/cube_crash_deluxe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367303/normal_6019fee6115e3.pdfIn PDF document text
    • http://micrometer25bill.site/32299541100o4dve.pdfIn PDF document text
    • http://dujojiwasemob.mywebcommunity.org/12_math_rules_that_expire_in_the_middle_grades.pdfIn PDF document text
    • http://inter-kalinka.ru/previous_employment_verification_letter_template_wordrteml.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tulajadulixo.myartsonline.com/the_power_of_prayer_book.pdfIn PDF document text
    • http://namepafubi.atwebpages.com/schwinn_bicycle_pump_parts.pdfIn PDF document text
    • http://sebokegekesuded.atwebpages.com/rugide.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_off0000d4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4E8 4900 bytes
SHA-256: 35da96abd07763b73b127453bb0b0be8ed4071ff94afdbf4edc619cd344af06f
font_01_sfnt_off0000e5b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B5 10348 bytes
SHA-256: 71a9004600ba8270b6fe3c2e4ed56a6ab59edeb5c87924b2bbde5daf460da7ad