Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff8bb044bca59e3e…

MALICIOUS

PDF

71.3 KB Created: 2021-02-25 06:15:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: cbaa4dd9093db0967371e7246f660fb4 SHA-1: 35887fc95dd4a57ca11f76164bfcaf4a987803b2 SHA-256: ff8bb044bca59e3e43434a8ef3574b9cd6e1e059d2d29b3b8f101a6c5a6617d5
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://jacksth.ru/award?keyword=hbs+arc+800+manual PDF link annotation
    • http://zevewidojodot.mywebcommunity.org/84851803099.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374983/normal_5fd89748f20f6.pdfIn PDF document text
    • https://cdn.sqhk.co/zudatona/jcMojhE/old-_time_gospel_songs.pdfIn PDF document text
    • https://cdn.sqhk.co/fakineduxafe/fTvKhf9/arte_de_la_guerra_resumen_por_capitulos.pdfIn PDF document text
    • https://cdn.sqhk.co/sepagumal/eTqgjCy/votov.pdfIn PDF document text
    • https://cdn.sqhk.co/xipepovivik/iGjdMpM/32736535349.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426270/normal_5fd7dee3eec58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465149/normal_5ff01da7b0d34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425912/normal_5fd36df784027.pdfIn PDF document text
    • http://pogawubujogeje.mypressonline.com/26_week_money_challenge_5_000.pdfIn PDF document text
    • https://cdn.sqhk.co/jegamaxegev/gdjfMCf/foterinu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371800/normal_601074629d5a0.pdfIn PDF document text
    • http://wokulorumal.iblogger.org/brusters_brownie_sundae_nutrition_information.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488137/normal_5ff05bd28a5b2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fogosapew.epizy.com/platform_number_of_55615.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/troy_bilt_walk_behind_string_trimmer_parts.pdfIn PDF document text
    • http://rukosivujuxu.atwebpages.com/spiritual_meaning_of_numbers_601.pdfIn PDF document text
    • http://pozidijapepore.atwebpages.com/20859359572.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_off0000da3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA3B 5380 bytes
SHA-256: 87e27698d0f130c951f5f7db578ac85f392145c6cfb9772b25b494db410803e1
font_01_sfnt_off0000ec67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC67 10524 bytes
SHA-256: 61b4df564e315262f960a3c138419eeb7638efd345e76455c65f79bfdda93589