Malicious PDF — malware analysis report

Static analysis result for SHA-256 e908adee9a7b3a85…

MALICIOUS

PDF

38.8 KB Created: 2020-10-02 05:13:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a3c0c00e8bb17be7a66e0cd0d6631666 SHA-1: a7f20cf8e4483d0e4a460b5fd740210aa2e4d231 SHA-256: e908adee9a7b3a85636bb72017bfc4e96ac29216f5ee867ec4c8707f20caf3c5
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/strik?keyword=skoda+fabia+combi+2011+manual In PDF document text
    • http://pujug.blackfoxllc.com/uploads/1/3/2/3/132303189/jipigavozibojumomez.pdfIn PDF document text
    • http://files.ahleithner.com/uploads/1/3/0/8/130874213/de0d9daa2534.pdfIn PDF document text
    • http://files.olofleffler.com/uploads/1/3/1/3/131380440/dusuzijaviziw-zubirumefuxarip.pdfIn PDF document text
    • http://files.biggleswadesquash.com/uploads/1/3/1/0/131070581/686eb.pdfIn PDF document text
    • http://files.stevenkbeattie.com/uploads/1/3/0/7/130739935/564461.pdfIn PDF document text
    • http://files.bcahope.com/uploads/1/3/1/4/131407080/zopafoxin.pdfIn PDF document text
    • http://files.drumcrimewatch.com/uploads/1/3/0/9/130969950/pudebaxijizol-kufizuxakut.pdfIn PDF document text
    • http://files.kosative.com/uploads/1/3/1/3/131379014/1883196.pdfIn PDF document text
    • http://files.counsellingsupport.co.nz/uploads/1/3/0/9/130969873/veluvikojob_bamumufenur.pdfIn PDF document text
    • http://gazol.conniecycling.com/uploads/1/3/1/4/131454950/direwokog_zemajipo_gewilazedi.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/be163e04-33a0-4c32-a397-e14979787b5b/vubaju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/99acbc15-6ef4-4385-9079-31402b47fb4d/zinuwi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d521b755-dde8-4ca1-86c1-7b979a420cb9/fozuxenimefubexajivorew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/069601ad-d35b-47bd-ac41-2d9da467eb0d/zujugafefarukepi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4acec339-66c9-4998-b013-78219e064232/54898196090.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8e6f56d-a72f-461c-8efb-45aa289d0d43/didivav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa7c90ba-3bba-48d4-81b5-92bf9db3a78e/jurabefiwifim.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_off000058a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58A3 5524 bytes
SHA-256: f107fb15d6d592d5a31fcaedd6bae1e6acdaab08d60cff9aa7f2fa60a84e4fa7
font_01_sfnt_off00006b6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6E 10244 bytes
SHA-256: 2689660a674484a99a8a7729d063182a9165706510e3423263568c35a931a74d

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