Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac0c4bb4550e5e42…

MALICIOUS

PDF

81.7 KB Created: 2021-02-26 01:44:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e35e0da08455f9b51530b5cce30ae1c9 SHA-1: d41e6406d6b7a5d67f04942f42a027925a4bbb2a SHA-256: ac0c4bb4550e5e42bf001444cc909b54334b0304b3f3c0db79c7d053c45a0c4a
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/strik?utm_term=5+modes+of+handling+conflict In PDF document text
    • https://cdn.sqhk.co/seseniluvus/jgajciF/barber_shop_training_course.pdfIn PDF document text
    • http://netlysy.online/rci_2950_modsyi25a.pdfIn PDF document text
    • https://cdn.sqhk.co/bedogipaxog/4q2gfC2/fimapi.pdfIn PDF document text
    • https://lisopivoxo.weebly.com/uploads/1/3/4/9/134901835/964083.pdfIn PDF document text
    • http://runmasten.online/war_bollywood_movie_2019_free5nx3x.pdfIn PDF document text
    • https://nuzunovi.weebly.com/uploads/1/3/5/3/135314570/dajepedatofezu.pdfIn PDF document text
    • https://cdn.sqhk.co/nobixapo/jigjihg/royal_offense_2_mod_apk_unlimited_everything.pdfIn PDF document text
    • http://hisgohar.site/agrobacterium_transformation_in_plantsvikmr.pdfIn PDF document text
    • http://ig-soft-team.com/what_is_the_dewey_decimal_system_according_to_jemp3sgz.pdfIn PDF document text
    • https://ponegibafuzixi.weebly.com/uploads/1/3/1/4/131406662/tufibaxi.pdfIn PDF document text
    • https://cdn.sqhk.co/muvasesuru/Viehdha/67351176746.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pozonijegexovu.epizy.com/apa_guidelines_spacing_after_period.pdfIn PDF document text
    • http://vesevujivodekut.epizy.com/71446703692.pdfIn PDF document text
    • http://vekujekodabudu.epizy.com/update_android_9_cho_lg_g6.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/59748979486.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_off0001030c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1030C 5368 bytes
SHA-256: ebebacaf4ae593c41d35cc549ea434b8fce556da9ac1ba2cfa03d778038521c8
font_01_sfnt_off0001152e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1152E 10876 bytes
SHA-256: c4ba82dc874801071562ce112221edae5846585dee9d39a998f221923d4b28f0