Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b31ebbf1b02c956…

MALICIOUS

PDF

68.4 KB Created: 2021-02-25 11:16:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cb47143228583c383f97df46602e420b SHA-1: ce2da2fb4683c560b8c12ac57be0df095c0cee65 SHA-256: 1b31ebbf1b02c956150fb7f4ae680a293a2913832d21869a36749139c4587753
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://jacksth.ru/award?keyword=kenneth+cole+reaction+watch+band+adjustment PDF link annotation
    • https://lijipipixeralof.weebly.com/uploads/1/3/3/9/133999964/nabipowebuwak.pdfIn PDF document text
    • https://cdn.sqhk.co/porosobof/kOhNjbL/new_ringtone_song_dj_2020.pdfIn PDF document text
    • http://repair-planshetov.ru/kandinsky_on_the_spiritual_in_artlp0w0.pdfIn PDF document text
    • https://lufapaxate.weebly.com/uploads/1/3/0/9/130969762/jexovetuwo.pdfIn PDF document text
    • https://sokudepan.weebly.com/uploads/1/3/1/8/131871622/8947668.pdfIn PDF document text
    • http://punavuvipufov.sportsontheweb.net/gawaxekabimidodamemi.pdfIn PDF document text
    • https://fusesekomufe.weebly.com/uploads/1/3/1/6/131606177/rorakokenu.pdfIn PDF document text
    • http://bobr.space/dugujujudaxi0n6cx.pdfIn PDF document text
    • https://tivexafo.weebly.com/uploads/1/3/4/3/134348633/pexogefajelaz-gesakepefe.pdfIn PDF document text
    • https://pitisugokusibim.weebly.com/uploads/1/3/4/4/134445344/tovapaka.pdfIn PDF document text
    • https://zebazowis.weebly.com/uploads/1/3/4/3/134310266/9262828.pdfIn PDF document text
    • http://feelslike35.com/balochi_dance_video83obw.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kepagewav.atwebpages.com/which_statement_describes_an_extended_star_topology_quizlet.pdfIn PDF document text
    • http://lumalamijupu.rf.gd/dotumetumezoxodomem.pdfIn PDF document text
    • http://pipinodojo.epizy.com/the_change_up_full_movie_free.pdfIn PDF document text
    • http://lixutepojux.rf.gd/3d_modeling_animation_software_free.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_off0000d083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD083 5456 bytes
SHA-256: af4fc8f75e4df6c43037ee6155b986c6d9f8301538db5c3b80666ce69b66d5a6
font_01_sfnt_off0000e2fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2FA 9708 bytes
SHA-256: 7b813e535bd4edb642662ff7d78043c83de2eead05c90b9a03d05c48f2c0192d