Malicious PDF — malware analysis report

Static analysis result for SHA-256 586ec5f4b6109155…

MALICIOUS

PDF

71.9 KB Created: 2021-02-12 01:51:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3fe95c29e8983ff3297f722382e4483a SHA-1: e259bd1a1e3137b049c190b22925828cb4ecb356 SHA-256: 586ec5f4b61091551f3dc9552cba2eb31227bd7c84830b16c421a43cafa75961
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://maypoin.ru/wb?keyword=blank%20map%20of%20western%20europe%20pdf PDF link annotation
    • https://lasapiboxemifol.weebly.com/uploads/1/3/4/8/134865682/0020c6b921074b.pdfIn PDF document text
    • https://cdn.sqhk.co/wanevakaxuma/haXsMhj/2017_can_am_defender_hd5_for_sale.pdfIn PDF document text
    • https://woniwisupu.weebly.com/uploads/1/3/4/2/134266019/sinapusewe.pdfIn PDF document text
    • https://cdn.sqhk.co/pazakazagoz/gcjbRSp/43536136777.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/ifaxlid/8032911528.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444623/normal_5fe8764dcfdea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377408/normal_601b8766ad2fb.pdfIn PDF document text
    • https://rozutawupev.weebly.com/uploads/1/3/2/6/132695629/pumadiketitofabi.pdfIn PDF document text
    • https://wimupajano.weebly.com/uploads/1/3/4/6/134682998/pezenezorivekakota.pdfIn PDF document text
    • https://lojexidipiwakif.weebly.com/uploads/1/3/4/0/134041559/kezabulo.pdfIn PDF document text
    • https://cdn.sqhk.co/sowovupo/iia1gC1/66385134742.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446500/normal_5fe641fc19892.pdfIn PDF document text
    • https://guzepebizosi.weebly.com/uploads/1/3/4/8/134880367/kefojufikesatos_jawizavixureso_govokigejurig_mamanidat.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/fewifuwu/bluestacks_tweaker_3._12_latest.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/franchising_business_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/moxemumevatazezeguvol.pdfIn PDF document text
    • https://s3.amazonaws.com/falejogajir/battlefleet_gothic_armada_2_achievement_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/young_baroque_font.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_off0000da33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA33 5392 bytes
SHA-256: 47f7dd08ca4814b7a3bb02389bc52b42ae03483cba1a9b374b11d6ff7286f2d5
font_01_sfnt_off0000ec8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8A 11472 bytes
SHA-256: 6c22c4dc70225dcee5c47a95c06e10216871a1f9156f3fce04365e0e5a5d2222