Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0f131697eda9413…

MALICIOUS

PDF

72.3 KB Created: 2021-02-28 07:03:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a74d6f0404e7e9fd97392af321f70e7c SHA-1: d0842009a9fa59a969ce23985eb184425db6206a SHA-256: c0f131697eda94133eb59facfd9a7cfe9445cd0fdbe5db9b7d27aaf146433375
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=favorite+books+to+read+2020 PDF link annotation
    • https://latitatuforuza.weebly.com/uploads/1/3/1/3/131398212/957931.pdfIn PDF document text
    • http://sdfafq.info/naruto_shippuden_episode_guide_no_fillers5ceo7.pdfIn PDF document text
    • http://iceteas.space/49736875226o3vwx.pdfIn PDF document text
    • https://cdn.sqhk.co/wadebekop/ijdifk0/gemulekipebifawemoxelaj.pdfIn PDF document text
    • http://fitit.space/mere_christianity_study_guide_answersf46x3.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/jap0BaH/duck_game_steam_key_free.pdfIn PDF document text
    • https://cdn.sqhk.co/getabemuto/3Nh3Ug8/momakugufimerolujusuv.pdfIn PDF document text
    • http://muzoc.xyz/storytelling_with_data_nussbaumer237p3.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/Mjcm9AD/tonurirodafumadenuludedo.pdfIn PDF document text
    • https://cdn.sqhk.co/dupeguwova/ihhhsje/17876079003.pdfIn PDF document text
    • https://nelemiken.weebly.com/uploads/1/3/4/7/134704654/fomero.pdfIn PDF document text
    • https://pujawemufupu.weebly.com/uploads/1/3/2/6/132680931/leborig.pdfIn PDF document text
    • https://xewulowew.weebly.com/uploads/1/3/4/7/134757629/mifuv.pdfIn PDF document text
    • http://proflist-barnaul.ru/wopubujuzumedapo4jfp.pdfIn PDF document text
    • https://gunujudota.weebly.com/uploads/1/3/2/3/132303168/maloxamosuk_ruzixen_zetatafuze_sibebijukagezo.pdfIn PDF document text
    • http://reduslimitalia-oficial.site/22870913184xaz5.pdfIn PDF document text
    • https://cdn.sqhk.co/tobijoge/Thhhgjj/weekend_update_hosts.pdfIn PDF document text
    • http://nyvelsets.online/bromothymol_blue_preparation.pdfi2mwp.pdfIn PDF document text
    • https://cdn.sqhk.co/lexaxemiji/hhFhbgf/47897024508.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_off0000df04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF04 5280 bytes
SHA-256: d94f3e9fe3392fe0f33a5227562a1dee43cfe77a50869b04ce23d66e9ebc0087
font_01_sfnt_off0000f10b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF10B 10224 bytes
SHA-256: 6da3cc78e7830435387d57205be0a1a8918b923936a3e3544b1a6136fb276cca

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