Malicious PDF — malware analysis report

Static analysis result for SHA-256 f65262cb4c3bb00a…

MALICIOUS

PDF

72.1 KB Created: 2021-02-20 14:14:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 997fd6f21786c4df834e0cd1cfef9ca8 SHA-1: 05e60664d14bfb22a5d372f859a2a1803a4b7b29 SHA-256: f65262cb4c3bb00af9b8907ea0ae940d6e1087847528ba7871ec41ed047c342a
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://jacksth.ru/strik?utm_term=d-link+dir-655+setup+wizard+download PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4496151/normal_5ffce588cea72.pdfIn PDF document text
    • http://dezunanerab.iblogger.org/international_society_of_thrombosis_and_hemostasis_guidelines.pdfIn PDF document text
    • http://bebinovixox.iblogger.org/what_is_the_roman_number_of_5003.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468572/normal_5fd91fccb2d83.pdfIn PDF document text
    • http://autokenn.com/paxewidezakuxilifufatqu1at.pdfIn PDF document text
    • http://maska-respirator.shop/rizerumok60933.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444113/normal_60260e6757523.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371240/normal_601abfc52722d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454420/normal_5fd80e98e737c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499656/normal_5fe1543142412.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380527/normal_5ff0df41b1413.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501054/normal_602286550e8b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378599/normal_600905f2f01d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410975/normal_6016368305c3e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zetamox.epizy.com/ropematokavukoxuk.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/40257438143.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/41363614029.pdfIn PDF document text
    • https://s3.amazonaws.com/kovozenamofox/88739559638.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_off0000dad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD5 5468 bytes
SHA-256: f147fa6a248b715e7db62b3937d7049d1bd3deb494f41cb114409cb526b460bd
font_01_sfnt_off0000eda3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA3 11020 bytes
SHA-256: 614474dc33da75625cdfdc6f4e8acf5330e8a684aaa9e4134986017847268d62