Malicious PDF — malware analysis report

Static analysis result for SHA-256 64de3817a8f2db9d…

MALICIOUS

PDF

73.1 KB Created: 2021-02-27 22:08:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: a88a8c4408abe2f2b7ef13f7487f217e SHA-1: 9e7214c32fbd9ce2e95ea4a7d84e8f52bd8780b1 SHA-256: 64de3817a8f2db9d5444607716735a959e49b1b230bbc0ad6bd2f8e1179c6610
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/award?keyword=altistart+48+fault+codes+clf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4375705/normal_6007b8b2cc4b4.pdfIn PDF document text
    • https://zumonula.weebly.com/uploads/1/3/5/3/135323502/tatisupazagopevuxe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471234/normal_5fc65b4ab6d5d.pdfIn PDF document text
    • http://nalomojup.22web.org/26182152637.pdfIn PDF document text
    • https://sarejazaxixosib.weebly.com/uploads/1/3/4/6/134633098/fomawilozobi_dazofi_lelela.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381344/normal_600c9a9eb29d2.pdfIn PDF document text
    • https://vevotudoxis.weebly.com/uploads/1/3/5/3/135313682/ronikirum-sozidozuzopu.pdfIn PDF document text
    • https://malavaxun.weebly.com/uploads/1/3/4/0/134018228/8912845.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422377/normal_6022bd55a38ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496585/normal_600a7707bba13.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456982/normal_5fce78da4bc0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383579/normal_602e3203206cb.pdfIn PDF document text
    • https://tunizobun.weebly.com/uploads/1/3/1/0/131069832/dipifokepimikomave.pdfIn PDF document text
    • http://luxomozuk.mypressonline.com/is_tire_flipping_a_good_exercise.pdfIn PDF document text
    • https://raxuremaxu.weebly.com/uploads/1/3/5/3/135350699/7408817.pdfIn PDF document text
    • http://xolimaked.iblogger.org/5017418526.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mevusajilitum.rf.gd/80624460158.pdfIn PDF document text
    • http://sisuraregimu.rf.gd/broken_vessels_guitar_chords.pdfIn PDF document text
    • http://beralopijabeziz.rf.gd/guidelines_definition_drafting.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_off0000e1de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1DE 5284 bytes
SHA-256: ec3dfc191e0bfdbf794bc33c93ccd0b87cf562904b4debb57c0380411cfb6267
font_01_sfnt_off0000f3f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F0 10312 bytes
SHA-256: f22aaaba27a93f080fc9823df22a21500dc05f36707f65909a7de5aa40956408

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