Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c857c36df271da0…

MALICIOUS

PDF

70.7 KB Created: 2021-02-22 20:45:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8007aff5cef4cedc70532e380459bd1c SHA-1: cbf6c25ec0ac4da9a4ff429ac80376fb8df45555 SHA-256: 2c857c36df271da0d144e3309fcc95918dc68fa1f613955ff2c807e45c93ab71
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://bologen.ru/wix?keyword=sims+mobile+hack+apk PDF link annotation
    • https://xadidevoki.weebly.com/uploads/1/3/0/8/130873902/0ed0fd938ea7b.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/2zgeWhc/45691453430.pdfIn PDF document text
    • http://christmas-gift.ru/college_student_biography_template1e73w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384159/normal_60333e4250da8.pdfIn PDF document text
    • https://cdn.sqhk.co/kagelemovo/3BiaQhh/24896416353.pdfIn PDF document text
    • https://ginuwedisifixel.weebly.com/uploads/1/3/4/7/134744372/c4152faa664d9.pdfIn PDF document text
    • https://cdn.sqhk.co/rorajakura/gdgcipZ/wolodowulodubakujil.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470040/normal_6033e2e18672f.pdfIn PDF document text
    • https://cdn.sqhk.co/vuzowadijavu/pNZzgjA/rakeworimuripusudizodepo.pdfIn PDF document text
    • https://cdn.sqhk.co/wofunukasu/pjbCghd/fifa_world_cup_brazil_2014_video_game.pdfIn PDF document text
    • http://limons.space/adblock_software_freenaar2.pdfIn PDF document text
    • https://cdn.sqhk.co/zatejurix/jgEjhgj/memufujok.pdfIn PDF document text
    • https://cdn.sqhk.co/kusewupudin/igfii2o/strange_deep_sea_creatures_documentary.pdfIn PDF document text
    • https://tofikopu.weebly.com/uploads/1/3/1/3/131381225/wutogo-sumuvoza-vejufuvenutavo.pdfIn PDF document text
    • http://idealicaitalia-official.site/best_free_mixing_and_mastering_appwl9xs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422645/normal_60305a8047007.pdfIn PDF document text
    • https://cdn.sqhk.co/tinukomafiro/hjjdnjf/65307262967.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/kigavanus/cbse_marksheet_2015.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/printable_boggle_game_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/wonumafubij/19173719117.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_off0000d8f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F7 5384 bytes
SHA-256: c1d6f70dd315380ab5ef3a85a76239a14b46e9a08405679d44a8562c31c7a1ab
font_01_sfnt_off0000eb19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB19 10176 bytes
SHA-256: 5aa77f79be31b73985f52ab7840e33049ef445a336be51f8500cecb273e671a5

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