Malicious PDF — malware analysis report

Static analysis result for SHA-256 7931941edec22c1d…

MALICIOUS

PDF

43.2 KB Created: 2020-10-27 06:01:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-15
MD5: 6cc35f1afe6a5d7d01fdff81db939e4f SHA-1: c1db06f19ddc603eefc4d2eda268c338133d21f1 SHA-256: 7931941edec22c1d8a20e41ae40dc9b4d455ea312bfed3fcbd532ba0564c0105
194 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.
  • 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.
  • 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/wb?keyword=read%20out%20loud%20app%20pdf In PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/116ec7b6.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/8597583.pdfIn PDF document text
    • https://fukikabigo.weebly.com/uploads/1/3/4/4/134457586/dezizijape-vijufofejab-jixoxulu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/65215534617.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/bought_by_many_pet_insurance_claim_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ce0e8480-9dee-4b60-9f2a-0b11ffb0bef8/88790123116.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ee97dd2-046a-4cf7-a5fa-34980af97946/35844441778.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20833e93-6608-4344-9a13-99c3cf918660/tujenuparositofujebu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c223c72-4136-48c9-a40e-b0ebc10683d4/xunolejetivetinizuxegem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a40ea918-3537-42fb-b9a2-4e0046bec0f7/mijam.pdfIn PDF document text
    • https://s3.amazonaws.com/juzinaramip/6223820900.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/89347102594.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/wasema.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/50277516793.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/gorukunegufavenexidumed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0210ee4f-8570-407b-ab41-f0cef45142b6/jamagulijekopetus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a58f5506-5c9f-417a-a8ed-eb1736e0c4f6/novetobivoteladid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18616d98-b943-4752-8435-a3543f61e1e9/gezape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c42b5a6e-bb20-4e11-ad1b-e54789ac05a9/xibamaruxixivem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70c84e44-3ec7-4d3b-8dd7-bb3d90de148b/58320096672.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b538d688-5c6b-42d5-9206-7ab51658231c/ralawetami.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7ad5b59-eda1-4670-8575-122e05d9b18a/88966221054.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_off000066ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66CE 4768 bytes
SHA-256: 5434141974f21d343e8105adbb8cc572a6c3566d7e117c2102bac637ca2609ff
font_01_sfnt_off00007721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7721 12500 bytes
SHA-256: f05db1bb5d68de630ae2aaf2483bc75858df9de97cc89561e7417aa4968af07a

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