Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd0ea6f517429641…

MALICIOUS

PDF

42.5 KB Created: 2020-10-07 11:45:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: be7b6fda38d6db4e3e56061ca298d745 SHA-1: 7d4c9c9b33090a845b84940365d008129eb1a987 SHA-256: dd0ea6f517429641ee270108d20cc6aa9ecacec4ba9591d77d710b08cf8189fa
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://cctraff.ru/strik?keyword=el+diario+de+una+ilusi%25C3%25B3n In PDF document text
    • https://site-1036980.mozfiles.com/files/1036980/2941554450.pdfIn PDF document text
    • https://site-1036938.mozfiles.com/files/1036938/69039351006.pdfIn PDF document text
    • https://site-1037098.mozfiles.com/files/1037098/26459550666.pdfIn PDF document text
    • http://temaleju.mhcgb.co.uk/uploads/1/3/1/4/131438729/zatubuv.pdfIn PDF document text
    • http://xizin.hgccz.com/uploads/1/3/2/7/132740212/furotagexalug.pdfIn PDF document text
    • http://tafufe.mymonarchs.com/uploads/1/3/0/7/130738721/jomikejumigew-rijusinufok-nabisot-zixelibu.pdfIn PDF document text
    • http://files.bendigounited.com/uploads/1/3/0/7/130739744/8036849.pdfIn PDF document text
    • http://files.castlecomplexcafe.com/uploads/1/3/2/6/132681308/derozufin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/de4efe3b-9134-4005-a3ef-fb1289c78e62/71996059030.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8eb973fa-28ff-46cc-985e-1ccafaae1173/95923688730.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/830656df-a4f8-460a-8736-1fb2a95b0d86/mugofokulavekojirub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90f49f1f-65f4-4c9a-9542-95cc560c9422/kevetodusofilaxipuvopemim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/267bab56-eb5f-4118-8e1f-80cb750f126f/vuxig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73b4094f-3ba3-4630-a8f9-353698a9946d/rowusopuwomadimime.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49AA 4716 bytes
SHA-256: d429eafafd68a9b9af2ab5ddb31568192c5d4994b4f1378df543520867e1ce94
font_01_sfnt_off00005963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5963 4444 bytes
SHA-256: cae71b727b5c38d0ce99ad6e76eab8eb677a9fa591c1c0313c5da8693e3b2797
font_02_sfnt_off00006950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6950 11016 bytes
SHA-256: 3ee21f7271d75aa114c234b8b9052cd294f230f17492464853d392bc50de54fa
font_03_sfnt_off00008d28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D28 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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