Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca1df17e1d6cc993…

MALICIOUS

PDF

73.1 KB Created: 2021-03-05 14:10:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 6c0a813a05b9402c19e75e4c87d2b371 SHA-1: 8f6bb2e3cae27c082b50f59d2eb077b708a8770b SHA-256: ca1df17e1d6cc99379f4307cd93fe07c4fffbf752fc48587217b9ffe4f7c2823
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/award?keyword=thule+bike+rack+strap+failure PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4456660/normal_5fe7c9fb02de5.pdfIn PDF document text
    • http://3bki.ru/exemple_de_dpf081l.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453556/normal_600b009fd9849.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467032/normal_5fea2a0722c37.pdfIn PDF document text
    • http://cmbclientes.com/55753250328bbcj3.pdfIn PDF document text
    • http://shtancircul.site/background_png_full_hd_imagesy3rff.pdfIn PDF document text
    • https://mafoxoluz.weebly.com/uploads/1/3/1/4/131483222/zefoxuvebimi-jawiliwoteka-bimaj-julexu.pdfIn PDF document text
    • http://hdvideo.design/junoxitnafal.pdfIn PDF document text
    • http://abwaab.su/35474110022fzh7i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483365/normal_5fd10f2ec46b1.pdfIn PDF document text
    • http://best-store.club/narnia_3_in_tamilyogik57bm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426073/normal_602c84ca0293a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459176/normal_5fe9540a54fa5.pdfIn PDF document text
    • http://1xbet-football.fun/397518713438tbid.pdfIn PDF document text
    • https://nabidojanafo.weebly.com/uploads/1/3/4/4/134455463/rekogadulenitexa.pdfIn PDF document text
    • http://mufutekuson.getenjoyment.net/42042118812.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://juborekif.atwebpages.com/luwuzijutasudumilesivumud.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_off0000e2ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2EC 5256 bytes
SHA-256: be6839bd318886c8c39275c40e4e739122b1668287c7a2c1101f3415ccc7059a
font_01_sfnt_off0000f4c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C1 10292 bytes
SHA-256: 37647dfe37e58592fcded9ddb7920d1b9c3e01ce0352f8b956dfd0726fc32afa