Malicious PDF — malware analysis report

Static analysis result for SHA-256 af26aa0aa1b7308e…

MALICIOUS

PDF

50.7 KB Created: 2020-11-04 06:11:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 8d728ff8f91623b5f84b3a484cd33dbd SHA-1: c16db5a14e8609ad9f13886d0ce961773d352bbc SHA-256: af26aa0aa1b7308e7a7b45683f5683a44c4323eda45d6a66b64b5c1597ff101d
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://gettraff.ru/123?keyword=westland+survival+game+guide+2020 In PDF document text
    • https://dowikonusinewe.weebly.com/uploads/1/3/4/3/134374018/384d7d.pdfIn PDF document text
    • https://ruparowix.weebly.com/uploads/1/3/4/3/134350000/kuzilosijiwimivalala.pdfIn PDF document text
    • https://nekizinatuzi.weebly.com/uploads/1/3/4/3/134325328/lurogowinite.pdfIn PDF document text
    • https://butiziro.weebly.com/uploads/1/3/4/3/134308177/besikoterolojadizos.pdfIn PDF document text
    • https://duxuborokepab.weebly.com/uploads/1/3/4/4/134449965/fepekeso_xajimunexenor_vowoxa_nugapobi.pdfIn PDF document text
    • https://nujidigazinuwag.weebly.com/uploads/1/3/4/3/134318548/rujotigixasopanenaka.pdfIn PDF document text
    • https://buliduxefexefux.weebly.com/uploads/1/3/1/6/131636978/sadenukifirew_tiloxisu_gujesovijagux_jazuvubusawolo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421217/normal_5f96c3f5a9e96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385876/normal_5f8deb8943fa3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0647/4419/files/duplo_thomas_train_set_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/643eba6c-162a-47d2-b40d-d03bd0efabf8/vudaxuz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e6bcc84-5941-4d36-8dff-097a226b28b0/zojukufowibemuxexene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/960e47c3-3946-4b9b-9f0e-367611c47c77/free_printable_to_do_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8583/7989/files/driving_practice_games_free_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/408bb292-a6e7-49be-969f-44b323dc2b77/neverwinter_all_classes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9907a5c-91ba-4589-927b-5369600e736d/gukosisowokizebi.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_off000086f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F6 5492 bytes
SHA-256: 49f2ffc253bbdede09a070197a9d40922d3f624a38381f7906b0e4112ce3140e
font_01_sfnt_off0000999d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x999D 10580 bytes
SHA-256: 15fdbce1a9ba387d9d504bba7a8988ef258abf70f0b33658217984a8d78e3256

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