Malicious PDF — malware analysis report

Static analysis result for SHA-256 b34e0ccb73dc602f…

MALICIOUS

PDF

71.1 KB Created: 2021-02-27 12:26:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 685d18e8bd042a9f8fa51a8aead7d065 SHA-1: aecf4f8973726beb30eff2a12fa2f1d979e1122f SHA-256: b34e0ccb73dc602f895a7fbe2d4455878c5c8b59f8e94cb1b578941256544490
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://baarspo.ru/award?keyword=schaum%2527s+outline+college+physics+11th+edition+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379856/normal_5ffba718ca4ac.pdfIn PDF document text
    • https://cdn.sqhk.co/mozoposowi/hcjcrUM/dizagabifer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469350/normal_600f9736cf863.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/herman_miller_aeron_used_price.pdfIn PDF document text
    • http://roxelejabojafe.scienceontheweb.net/lavoxulijalujediguluj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474456/normal_5fe856f15389b.pdfIn PDF document text
    • https://cdn.sqhk.co/zezinojox/ia7Wfgf/22130856284.pdfIn PDF document text
    • http://poxumanavofeboz.scienceontheweb.net/john_deere_d110_service_light.pdfIn PDF document text
    • http://nurokojo.mypressonline.com/pugogupu.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/the_peasants_life_during_the_middle_ages_was_largely_determined_by.pdfIn PDF document text
    • https://cdn.sqhk.co/kavejufa/jiZmCcR/24593282775.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449185/normal_5fff6d637e3da.pdfIn PDF document text
    • http://zizodoroluxonaf.sportsontheweb.net/ordinary_differential_equations_problems_and_solutions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367916/normal_5fd1c7fa66717.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445869/normal_60279313b0979.pdfIn PDF document text
    • https://cdn.sqhk.co/pivugituxi/fUhiAgi/58130453766.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gozenabuzixi.onlinewebshop.net/braun_thermoscan_manual_6013.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_off0000d88b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD88B 5764 bytes
SHA-256: c7641dfa299e730005d2da77e6b8e816fe4d0c1bed484a20b83247504b57f122
font_01_sfnt_off0000ec24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC24 10200 bytes
SHA-256: c8e76252e5d22ce92b52044a5412dde3efcf59f995c021c534c2734981e4846e