Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0974e614f33f343…

MALICIOUS

PDF

45.0 KB Created: 2020-10-27 18:50:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 22c12b9548a3e52925429ad57fa45b6e SHA-1: a176e5723048675196a82520b1b463acbe54ad29 SHA-256: b0974e614f33f343256301220d573843883d7114b80aaf508062441e894664b4
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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://cctraff.ru/strik?keyword=170cm+x+240cm+in+inches In PDF document text
    • https://gasodugolulo.weebly.com/uploads/1/3/4/3/134375537/giwijabolodojef.pdfIn PDF document text
    • https://gajokemijibefe.weebly.com/uploads/1/3/4/4/134467094/4370243.pdfIn PDF document text
    • https://dagigokes.weebly.com/uploads/1/3/0/7/130739756/2278369.pdfIn PDF document text
    • https://luzodogapop.weebly.com/uploads/1/3/4/2/134265842/22966dbd09.pdfIn PDF document text
    • https://liwobolavus.weebly.com/uploads/1/3/4/1/134131542/molivopubulemaket.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae951c1a-b781-4aee-8f4f-4a1efc049f8e/tujitimesepibuvuvepavevu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8101fdfa-2440-46e7-975d-0e36d0ef328f/norma_eia_tia_568a.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6a487d9-1009-4bd9-af55-6d8f1adbe1be/movidagubedaba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22011f4e-65fa-494d-aced-5b4b1e819046/98728054092.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4692/7008/files/open_air_cinema_tentsmuir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/2065/0149/files/opm_songbook_with_guitar_chords.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/94576653174.pdfIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/56535214523.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e655e611-7a5a-451e-bb22-19848042d55a/sosugakezi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43a46559-caec-4c0e-a1c0-34de1169b646/ut_southwestern_employee_discounts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20acda53-3313-47c0-bee6-4757cc6bbf26/98745025823.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/261792b0-1549-42c8-b409-d5af0e1ce4b9/40029118654.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb5c31c7-5b8b-43b6-bd92-6c792961b1d5/gubixilolemabawuxorun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1be79976-73e3-4754-a696-e0be4302c49a/miwirav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/331cbe5c-9aa0-496a-9f60-b146e70f29f6/mawosomasewanotizuze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42ba5102-2d25-4b6d-aa88-bf26bdeca14c/26465834518.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_off000071c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71C4 5168 bytes
SHA-256: 35ed8a88d924c0fd3920f315eff4e77cacf70341856839687ffb747c970bbb95
font_01_sfnt_off00008346.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8346 10344 bytes
SHA-256: d0c07c7fd66c80e0b9624cf5850bf509c5cb9da36ea616bd0ad9ace18beea8fe