Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cf0a7dc00ca980a…

MALICIOUS

PDF

72.1 KB Created: 2021-02-27 05:36:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8114f46605b7eb32aa211d37c0df2fa1 SHA-1: 10f1078bffef2fc4b9262277099b84addfe5134c SHA-256: 7cf0a7dc00ca980a88acd0b40e7f7f25aca3ac960fcd4bfae7008170ed1e10b9
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 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/award?keyword=how+to+make+brownie+pan+smaller In PDF document text
    • http://dotavulilego.mypressonline.com/namatirupikivigonixo.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/pride_and_prejudice_movie_watch_online_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478687/normal_6033fac4eb661.pdfIn PDF document text
    • https://nometiru.weebly.com/uploads/1/3/4/3/134379396/9e5ee78.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414696/normal_6038d846e1f4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465694/normal_60345a2f487ea.pdfIn PDF document text
    • https://verefatodefi.weebly.com/uploads/1/3/4/7/134722939/6267963.pdfIn PDF document text
    • http://helplnstagramcontact5087423.com/delhi_metro_card_recharge_offer_phonepegkajy.pdfIn PDF document text
    • https://zugatuwedi.weebly.com/uploads/1/3/0/8/130874050/5102b8dc084844.pdfIn PDF document text
    • http://trikolor.site/raxebuwaxj7fk4.pdfIn PDF document text
    • http://axecheat5.xyz/profit_and_loss_report_in_quickeny5o19.pdfIn PDF document text
    • http://bewewafip.scienceontheweb.net/paris_regional_family_clinic_paris_tx.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/wewuxuviwar/selusonolojifefinuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/xeworumiwijuno.pdfIn PDF document text
    • https://s3.amazonaws.com/dapekufoxiraku/4580469686.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_off0000de96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE96 5220 bytes
SHA-256: 6b3e6fb7639f2b10b01c2078b4f6a57e8f342b39e5b55ac4746e19ac613e1953
font_01_sfnt_off0000f047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF047 10324 bytes
SHA-256: ca1a47773fb274e10b21777d8da573684d75db3ade773fafa7c55a7bc3384ecf