Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f811923cb611ded…

MALICIOUS

PDF

82.9 KB Created: 2021-02-28 19:27:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: abfe140aef37d4bc6a34f09643957b47 SHA-1: 1ff5b97f2f0acbf04147255554945d7d5a5e87ef SHA-256: 5f811923cb611ded6aeee9841182b09eb11889814903de379cfd353198f8cd9a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://vilenefex.ru/award?keyword=a+swiftly+tilting+planet+plot+summary PDF link annotation
    • http://desokore.medianewsonline.com/blood_bowl_death_zone_2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467007/normal_5fea026a1c396.pdfIn PDF document text
    • http://arfeshome.com/the_veil_removed_ewtne9wr5.pdfIn PDF document text
    • http://hr-insider.com/89786945011c9p61.pdfIn PDF document text
    • http://kaxiwemusemoj.mypressonline.com/linksys_re2000_blinking_light.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384468/normal_6005a446d3c4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415300/normal_60250511578b3.pdfIn PDF document text
    • https://cdn.sqhk.co/govizanorev/hQjeC4z/94882491085.pdfIn PDF document text
    • http://nijalatol.mypressonline.com/tiluguxoridosagepa.pdfIn PDF document text
    • http://aycotoro2.xyz/traffic_tour_hack_mod_apk_revdlx4ns7.pdfIn PDF document text
    • http://yewes.fun/168723052533gv9z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463298/normal_5fd949f3a667b.pdfIn PDF document text
    • http://rostov-mobile-doctor.ru/digestive_system_disorders_page_984_answersc9unt.pdfIn PDF document text
    • http://tezuveripoxub.mypressonline.com/nutone_intercom_doorbell.pdfIn PDF document text
    • http://lnstagramverifiedbadge-form.com/ragtime_doctorow_summarykh1h9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://maretubozewugi.myartsonline.com/19617302077.pdfIn PDF document text
    • https://s3.amazonaws.com/divexikav/free_subtraction_worksheets_for_3rd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/fresh_sheets_hostel_dubrovnik_old_town.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_off000108e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E1 5404 bytes
SHA-256: a706a9a2b6cce995d8d17eaab8404a6fc8fedafe4eae428dc1222e1c62be146e
font_01_sfnt_off00011b4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B4B 10208 bytes
SHA-256: c01175f434d90a1fcf2962b8b9194ae0123e30ea4243ece90340a757d824fd8d