Malicious PDF — malware analysis report

Static analysis result for SHA-256 363a12ebf38c1501…

MALICIOUS

PDF

65.9 KB Created: 2021-01-24 17:22:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6ade7f3685ca427229e54443ede1e98b SHA-1: 82fa405881725aefdc7a17c3b84a4b7e73c939e9 SHA-256: 363a12ebf38c1501ee7d6e412bff61d03779225bba284c3765bce17ec45a72ee
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • 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://crophysi.ru/aws?utm_term=cursive+pattern+worksheets In PDF document text
    • https://cdn.sqhk.co/fejisedetu/rjg1Mmr/rimaruwimawapawuxemodidew.pdfIn PDF document text
    • https://tabogivazosepa.weebly.com/uploads/1/3/1/8/131871767/ninifofuxobaw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408478/normal_5fcdad57bf590.pdfIn PDF document text
    • https://cdn.sqhk.co/nezusoxe/hgnihTP/disney_heroes_battle_mode_game_download.pdfIn PDF document text
    • https://topizamo.weebly.com/uploads/1/3/4/4/134435864/8390481.pdfIn PDF document text
    • http://beamorem.com/simple_buttercream_icing_cake_designsfz567.pdfIn PDF document text
    • https://cdn.sqhk.co/noxavuris/gekUwQb/rusk_deep_shine_conditioner.pdfIn PDF document text
    • https://sugulidan.weebly.com/uploads/1/3/4/5/134508933/235021.pdfIn PDF document text
    • https://cdn.sqhk.co/dudugetogi/hdjihbi/from_farm_to_city_dynasty_lost_mail.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/0zifCje/vufijilalorifitin.pdfIn PDF document text
    • http://seamanygau.best/candy_crush_saga_appy29us.pdfIn PDF document text
    • https://cdn.sqhk.co/mejiwimuza/jvvs1ij/asteroids_cheetos_2019_stores.pdfIn PDF document text
    • http://vir-tus.com/6877794295p8i5k.pdfIn PDF document text
    • https://cdn.sqhk.co/jogepirar/dgfhatr/medilil.pdfIn PDF document text
    • http://idealica-columbia.site/super_placar_futebolseg0j.pdfIn PDF document text
    • https://cdn.sqhk.co/furaxofir/sjhhgg9/character_appearance_generator_5e.pdfIn PDF document text
    • https://jinobodusere.weebly.com/uploads/1/3/4/7/134722577/xikogazibivololu.pdfIn PDF document text
    • https://cdn.sqhk.co/niwuruba/jgiiI4S/rixajebufokebamutisovavos.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c675.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC675 4996 bytes
SHA-256: 80f95c0cf9ff8f6912c10ad144dec91672fc2942b83d0f597ff4b3437123720a
font_01_sfnt_off0000d77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD77C 9768 bytes
SHA-256: 9c4f88caa0659872124f55d3c7abb3e170edfc41524f07be82b7ffb3dbbe7a24

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