Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e65db3074eb415b…

MALICIOUS

PDF

70.2 KB Created: 2021-02-16 05:28:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 74d262e6863081f4c6519eda9ccfbe83 SHA-1: e44c596949d507ae704f11f583c4a2e35ebf4312 SHA-256: 6e65db3074eb415bfbe9ced26749a4ca419b40c473683191af38d8756bcb8d9a
264 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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/wix?keyword=buy+here+pay+here+bailey+ave+buffalo+ny In PDF document text
    • https://cdn.sqhk.co/mewedenemez/djhgfng/sijozivakidi.pdfIn PDF document text
    • https://vonenefanor.weebly.com/uploads/1/3/4/6/134638091/5392733.pdfIn PDF document text
    • https://pikoxujedogusu.weebly.com/uploads/1/3/4/6/134665618/winiver.pdfIn PDF document text
    • https://cdn.sqhk.co/naxupowu/djdBjhe/download_moto_creator_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/hb2Xgde/gewakenike.pdfIn PDF document text
    • https://xoxatazafej.weebly.com/uploads/1/3/4/8/134861408/8937837.pdfIn PDF document text
    • https://jigotofobab.weebly.com/uploads/1/3/5/3/135300724/kekojiredakik-lakalineluj-popinigexu-nusigej.pdfIn PDF document text
    • http://microbestdigitalmeter.xyz/762336053502hhkn.pdfIn PDF document text
    • https://cdn.sqhk.co/xevowuto/jaOUgiU/open_world_building_games_steam.pdfIn PDF document text
    • http://keto-menu.online/71748467298kvluu.pdfIn PDF document text
    • https://cdn.sqhk.co/denepepunuja/gejhiJM/train_simulator_dinosaur_park_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/mevojazix/iieiew6/durug.pdfIn PDF document text
    • http://eliyalte.com/hovercraft_battle_arena_wikize590.pdfIn PDF document text
    • https://rujijixagav.weebly.com/uploads/1/3/1/3/131383475/3ff4d5.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/regegozumekoza/sufonalorejegugubuv.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/fifaxodiferafowetolomaki.pdfIn PDF document text
    • https://s3.amazonaws.com/luropi/64205715899.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/osaka_bay_area_map.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_off0000d588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD588 5160 bytes
SHA-256: 9a41844da3138617292236935768d819616b6d8899d90ea71d29495ca969b7bc
font_01_sfnt_off0000e71d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE71D 10776 bytes
SHA-256: 9069fcce781e814d9eda12cc1cd375eb6f238f6e0a88adb88e532ff8a94b22a4

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