Malicious PDF — malware analysis report

Static analysis result for SHA-256 af206cc061cb1981…

MALICIOUS

PDF

31.6 KB Created: 2020-10-08 14:36:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 388a0654944c9f01309695b0182e28d6 SHA-1: 86e54e3afe55c04c33a7a7b9d35ee79bb964da69 SHA-256: af206cc061cb1981e4ae8cac0a40be5e5396aa8ba5a0a6f6b1edea63fcdc9286
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://gettraff.ru/strik?keyword=silent+letters+worksheets+with+answers In PDF document text
    • https://site-1036812.mozfiles.com/files/1036812/bivewafojafun.pdfIn PDF document text
    • https://site-1042204.mozfiles.com/files/1042204/wisinixerizolademezijezag.pdfIn PDF document text
    • https://site-1036733.mozfiles.com/files/1036733/34728050255.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/839a0dcd-7ec2-4cff-9b49-e8e8dd39cbe5/falapazabejuruto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cca2c83-8a4c-469f-9475-5465b031090b/pabagulite.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/605cd0f9-acb4-45e7-b33f-2d940673dbda/6029924660.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57d19b65-5010-493e-8544-b4c1cb53323f/zulokigej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6310/5953/files/woman_with_flowers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/6068/6748/files/52347032137.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_off00003f96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F96 5032 bytes
SHA-256: 70aa08fb27c02e896c595f6ec3fa795d8aab873e6696d019a2559bc92aca057a
font_01_sfnt_off000050ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50BA 9728 bytes
SHA-256: 893a4db2a62ca69918c699fd720d1c02a978917911d914a15e8b86e929b1cf31