Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2c510defc44e13…

MALICIOUS

PDF

40.3 KB Created: 2020-10-09 11:29:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: ec13396bbeb52ad8f77804ec6f2667db SHA-1: d7a46372bc66535464b3cc1003acab4e63e21830 SHA-256: af2c510defc44e133bd04512e2542d5177c339885d8465a6371b310b8a2c2213
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=tomtom+model+1ex00+price In 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/364a852c-e89e-4ef7-91d3-aa3c6eb7e1f6/nububomijezomobonubarax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90551a0c-6794-4295-950f-b876b5cb765b/gexeluverala.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59693058-2a97-4482-9d25-6b8b0806128f/32597501283.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2b1b041-cbed-476c-bc76-eb19949a0efd/muruj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed41d2ae-534b-4f2e-a03a-b9567725e450/webikazanivemexidob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e70e188-acaf-4e76-a2d5-678f7fdae7a4/52395801868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/9148/4833/files/ares_and_athena_relationship.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3250/1656/files/wuvavifosoreluxomazufaduj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3638/5181/files/more_wise_or_wiser.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3372/5592/files/black_bullet_characters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1288/0544/files/28853074460.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_off00005aae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AAE 5040 bytes
SHA-256: 4af27b1d4c68c1b2f01375bf9bee01238a0358ed652f477ea0d1d977ac5da23c
font_01_sfnt_off00006bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BCC 13056 bytes
SHA-256: 67bd373c8aacd4ac473e41261a3dc26b4f0dd9212a2bb9d4bb0188f5a6759376

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