Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ad87a76ab514a6f…

MALICIOUS

PDF

72.6 KB Created: 2021-03-03 18:38:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9b4b1268ba651c2e8aa0f5f135eda478 SHA-1: f218fc5bed72eff7a00ad9dcc7ad3c70b5a2b4b8 SHA-256: 8ad87a76ab514a6f07b2be2cd465e04cdcb12cac962fd240651074ec1ae29163
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://druttle.ru/wix?keyword=britax+advocate+70+g3+installation+video PDF link annotation
    • http://sinanageke.iblogger.org/jinasupa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475016/normal_6021ed838bb1f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423154/normal_600183b6c6682.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462368/normal_603d1e08e0f4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459058/normal_5fdab86072396.pdfIn PDF document text
    • http://xuvepawa.iblogger.org/vamik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384482/normal_603888177c93d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482027/normal_600ae4c9c923b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426953/normal_600a68951ad7e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409616/normal_60110d36dbe89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496005/normal_5fe9d6bf3ee21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494435/normal_6013eb044d1f3.pdfIn PDF document text
    • https://cdn.sqhk.co/gavonenegave/oMhbgdg/febunozarafora.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://mafakizukizunof.epizy.com/73561036126.pdfIn PDF document text
    • http://tubodiluxav.epizy.com/lg_inverter_direct_drive_top_load_washer_oe_code.pdfIn PDF document text
    • http://repoguter.epizy.com/miss_world_2018_winner_question_and_answer.pdfIn PDF document text
    • http://bezopiwuzalobit.rf.gd/catholic_baptism_certificate_template.pdfIn PDF document text
    • http://najaxobefirag.epizy.com/86623150504.pdfIn PDF document text
    • http://dafoxakonefa.epizy.com/92737970487.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d1fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1FE 5460 bytes
SHA-256: 49ae025ebb0b6e5e76b12e337338a706f7cb29483c05bfc4c2f7d55cb9b80898
font_01_sfnt_off0000e49a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE49A 9972 bytes
SHA-256: 2821ae36288d916f6db26e67c29182981954b7973fd81f04dd473f68a5d07dc6
font_02_sfnt_off000106d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D0 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3