Malicious PDF — malware analysis report

Static analysis result for SHA-256 72ba421f9c342b42…

MALICIOUS

PDF

88.6 KB Created: 2021-02-15 12:41:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-28
MD5: 1f9747e5cd75eddff912c666b4fa0050 SHA-1: 8befb7ff9a18b8516ff939e83e61705e896b3d4c SHA-256: 72ba421f9c342b42fafea23da580108c83714799e84f80e454a723df31abaebc
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://bologen.ru/strik?utm_term=what+does+unanimous+consent+agreement PDF link annotation
    • https://rawubewo.weebly.com/uploads/1/3/1/4/131405976/sexuparoratasoperub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369648/normal_5fceb2a7e404f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403407/normal_5fcb329e433d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482648/normal_6026dbb06a417.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367644/normal_601e163d3d301.pdfIn PDF document text
    • https://cdn.sqhk.co/zanemulazif/v9heieX/21668214259.pdfIn PDF document text
    • http://jilet2.club/74029478734f6tk3.pdfIn PDF document text
    • https://gisogademumes.weebly.com/uploads/1/3/1/3/131379615/9591736.pdfIn PDF document text
    • http://contentmedialiteracy.com/stickman_hello_stars_gamee0sv4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425917/normal_5fe0f265cd754.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410207/normal_5ff29e978a07e.pdfIn PDF document text
    • https://goxanakevixi.weebly.com/uploads/1/3/4/8/134857001/7535204.pdfIn PDF document text
    • http://vipadminler.org/natural_disaster_preparedness_plan_templatew94a6.pdfIn PDF document text
    • https://cdn.sqhk.co/tamurikubol/jtfifii/8_bit_mega_box_simulator_for_brawl_stars.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529893/normal_5feeeb7a96743.pdfIn PDF document text
    • https://lanutitokoxoziv.weebly.com/uploads/1/3/4/0/134096970/3e989dd7.pdfIn PDF document text
    • https://dalenorilesa.weebly.com/uploads/1/3/4/8/134858788/giwujoduzasazavi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382960/normal_5fed727658ed3.pdfIn PDF document text
    • https://cdn.sqhk.co/vejuwipem/iO5EgBA/jatifopisafutaw.pdfIn PDF document text
    • https://cdn.sqhk.co/didozakir/hhhijCA/lasofuxagilavilariketi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00011d9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D9E 5336 bytes
SHA-256: 85de683c734756c708e20871147702efca9fcf0fc54a37c018c0a682aaaef88a
font_01_sfnt_off00012fa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FA5 10992 bytes
SHA-256: c7de43fdf823b5d1a23427d8d85cc8af773202628bac50e2164b4b91d2718728