Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ac0a8876bf1dad…

MALICIOUS

PDF

78.8 KB Created: 2021-02-27 21:29:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 423f3339709783eccdc56345549bd585 SHA-1: d5ef4c0a62160bc1cc223730e60a0ce9ed0d6c07 SHA-256: 03ac0a8876bf1dadec93967e73e926bbe6d5ef4e2de7a451f73c05255fac45a3
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=brother+hl-5370dw+wireless+driver PDF link annotation
    • http://gatorama.fun/honeywell_barcode_scanner_1900_specificationsecz77.pdfIn PDF document text
    • https://zumavoga.weebly.com/uploads/1/3/1/3/131383266/7559495.pdfIn PDF document text
    • http://rivozuzeno.mywebcommunity.org/86805770648.pdfIn PDF document text
    • https://cdn.sqhk.co/fusojafiza/gcgfije/14030503994.pdfIn PDF document text
    • http://jawixogu.mygamesonline.org/23361454636.pdfIn PDF document text
    • http://comp-arenda.site/event_management_proposalzaz0h.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489853/normal_5fe73e4928e70.pdfIn PDF document text
    • https://wenudujajavu.weebly.com/uploads/1/3/5/3/135318124/3d3d2712970.pdfIn PDF document text
    • https://cdn.sqhk.co/koditisalupe/Rh7Tuge/guide_for_johnny_trigger_sniper_shotgun.pdfIn PDF document text
    • http://kufafukedexepix.mygamesonline.org/how_to_fix_a_john_deere_riding_lawn_mower.pdfIn PDF document text
    • https://nutovavodus.weebly.com/uploads/1/3/4/0/134012609/pogasikoxas.pdfIn PDF document text
    • https://cdn.sqhk.co/nixafusoda/jfgfh6q/free_printable_preschool_learning_games.pdfIn PDF document text
    • https://cdn.sqhk.co/pibilebomek/rZyicyb/tupulozadibiburagodev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jezevenakos.myartsonline.com/oedipus_rex_movie_2008_trailer.pdfIn PDF document text
    • http://zesafemumibow.myartsonline.com/order_of_operations_definition_statistics.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_off0000f7cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7CD 5448 bytes
SHA-256: 77a5873f2b1f55e2f863d943662ef883c66a2daffb8abe5425b62a94873a4825
font_01_sfnt_off00010a7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A7D 10596 bytes
SHA-256: 40c44fc3c0fe4bd9b3fb82b37d35b892fb12bb9f00fbfd3c21898f3be1617b4f