Malicious PDF — malware analysis report

Static analysis result for SHA-256 53c2b36de88994d9…

MALICIOUS

PDF

70.4 KB Created: 2021-02-27 08:43:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6e363079ca0d07dbae1cd29b00c569f6 SHA-1: bcd9371f818a4efd06f0f85a9685018c9779b641 SHA-256: 53c2b36de88994d903017f14686a129f3d8c7564089765a81428444c49487fd9
186 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
  • 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.
  • 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://xezojetit.ru/award?keyword=how+to+start+a+drawing+youtube+channel PDF link annotation
    • https://cdn.sqhk.co/kisunika/gimha9G/95293483030.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476273/normal_6011fbdd7483a.pdfIn PDF document text
    • https://cdn.sqhk.co/fabukujeb/Mjihjgg/the_trip_to_spain_movie_trailer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481993/normal_5fdbb5d588474.pdfIn PDF document text
    • https://cdn.sqhk.co/terasovo/dygiwha/stickman_the_flash_mod_apk_unlocked_weapons.pdfIn PDF document text
    • https://febelozo.weebly.com/uploads/1/3/4/5/134599394/latugofogezidik-nijevelafed-xofore.pdfIn PDF document text
    • https://cdn.sqhk.co/fekebazi/c6DicFF/memobijufibaxezez.pdfIn PDF document text
    • https://cdn.sqhk.co/rewaloxuruvu/Rhc6enC/huawei_health_ios_review.pdfIn PDF document text
    • https://cdn.sqhk.co/kapapomabu/HEihzhh/best_mauler_heroes_afk_arena_2020.pdfIn PDF document text
    • https://puzomukasudugun.weebly.com/uploads/1/3/4/8/134865935/nobudakiz_mazawizigaso_namodu_lolatifisaboleg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455399/normal_5fd0fb1820235.pdfIn PDF document text
    • https://cdn.sqhk.co/setuboluraje/jjCFVms/knighted_meaning_in_tamil.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/mainstay_computer_desk_instructions.pdfIn PDF document text
    • https://fojiwuduz.weebly.com/uploads/1/3/5/3/135309278/550588.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jasunusemoki.onlinewebshop.net/what_is_ms_word_format_resume.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/83676442035.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/parkside_performance_uhlova_bruska.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_off0000d7c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7C3 5496 bytes
SHA-256: 439a95311b7f2f2c276acfb2d7c0992fd3c5dcf25ea3a3f9dda53ee85d008a4b
font_01_sfnt_off0000ea82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA82 10016 bytes
SHA-256: d5ed223f9272518967bd53cdfac6dd6d00265379edb11c26504190108c4c09dd