Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c6b6a240c9e16ab…

MALICIOUS

PDF

63.3 KB Created: 2021-02-21 14:23:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8ec32eeb191be91b4ffe269a8e7497e9 SHA-1: e0caa670f0921ac2f47bce8dea7bc972e38fc186 SHA-256: 7c6b6a240c9e16ab66d38325f8e41abc5c45c7497a019de136e895cbd0dfc8fe
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/strik?utm_term=klipsch+promedia+2.1+thx+certified+computer+speaker+system+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379230/normal_6026b362a0178.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455399/normal_5fcaa329aaba9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375340/normal_5fc60a4418343.pdfIn PDF document text
    • http://vknacruckalaikov123.xyz/biologia_celular_y_molecular_de_robertis_16_edicionw0jy2.pdfIn PDF document text
    • http://pro-komp-master.website/wuvesulebijotetebibabo8uw6a.pdfIn PDF document text
    • https://cdn.sqhk.co/bipokagiti/eM7Jhjk/crossfire_car_review.pdfIn PDF document text
    • http://myfirstsite.xyz/english_nursery_rhymes_videot2n6u.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422133/normal_600816bb52abd.pdfIn PDF document text
    • http://antonioit.fun/spiral_fracture_finger_recovery_time2asr0.pdfIn PDF document text
    • https://cdn.sqhk.co/sarimotel/TJgdxjM/offline_poker_texas_holdem_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/tasiteregixo/o59ggnR/wu_tang_clan_winter_warz_instrumental.pdfIn PDF document text
    • https://pananufizusa.weebly.com/uploads/1/3/4/4/134445813/razekem.pdfIn PDF document text
    • http://ompala.store/padaguvofiweteze6ejix.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469836/normal_6025198718ea8.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/jakujakula/disciplinary_procedure_letter_template.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_off0000b985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB985 5816 bytes
SHA-256: 3761aff16a22e4c9e6ec33fadea24f3eeb12d8904bf004d4479ad92bd871a248
font_01_sfnt_off0000cd32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD32 10132 bytes
SHA-256: 3b566401e8e86115a870b3f44419309543e07f42655b6a60e54364efff46580e