Malicious PDF — malware analysis report

Static analysis result for SHA-256 efac89c7464b11b4…

MALICIOUS

PDF

70.6 KB Created: 2021-03-01 17:54:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 11fb10bb3357d192485785e990acbc2b SHA-1: 12d6ed2eeea0ca799f622f320faeea45e2a72c5f SHA-256: efac89c7464b11b446082d083318ed0a867e5334a47640ab046e01664866cebf
86 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • 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://pelibifir.ru/strik?utm_term=wacker+neuson+bs60-2i+parts PDF link annotation
    • https://fesimubigezati.weebly.com/uploads/1/3/4/5/134515628/b49be2a0b6fd.pdfIn PDF document text
    • http://kipegujodup.getenjoyment.net/how_to_screen_mirror_iphone_to_vizio_v_series.pdfIn PDF document text
    • https://cdn.sqhk.co/sakupiraf/haKgiSp/58323673946.pdfIn PDF document text
    • https://betoxugibujimiv.weebly.com/uploads/1/3/1/0/131071043/8b0952.pdfIn PDF document text
    • https://cdn.sqhk.co/datisafapuv/iihfijj/video_player_app_for_mac.pdfIn PDF document text
    • https://fafodedok.weebly.com/uploads/1/3/4/6/134602811/5452405.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzudulo/hBhfZhb/never_gone_2.pdfIn PDF document text
    • http://xepelewatelaziv.getenjoyment.net/conservation_of_energy_quiz_answer_key.pdfIn PDF document text
    • https://cdn.sqhk.co/jezofadu/gezhgjb/minecraft_2020_download_gratis_android.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/richard_rorty_achieving_our_country_summary.pdfIn PDF document text
    • https://cdn.sqhk.co/fezivabuja/iaLjdPi/northwest_ordinance_in_a_sentence.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/muvevanepen/voganixolalobepumatudumam.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_off0000d6e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E5 5572 bytes
SHA-256: 7152cacd2d64e117de843382174889181e89f38123ffbe66b7fa534f6dfa3017
font_01_sfnt_off0000e9fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9FA 10612 bytes
SHA-256: a5630ded988904efc46fa2267a4282e8ade6c0c18888f62718478682838e84f4