Malicious PDF — malware analysis report

Static analysis result for SHA-256 af21373906c9b6ed…

MALICIOUS

PDF

50.3 KB Created: 2020-07-25 18:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: 4ee337d446a1c9e7b604bcb2afe63cf7 SHA-1: e897dbd1d2e010902d7ca4ad46c2deaa713096f3 SHA-256: af21373906c9b6ed6dee53937be55651571eb857643adf7e781b5d3125f57a37
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://ttraff.com/pify?keyword=what+are+your+career+aspirations+good+answer In PDF document text
    • http://files.acityonahillphotography.com/uploads/1/3/0/9/130969065/6dd1aa83e35997.pdfIn PDF document text
    • http://files.jacobraywagner.com/uploads/1/3/1/3/131383456/18c9c49ad79.pdfIn PDF document text
    • http://files.fittingroomligonier.com/uploads/1/3/0/8/130814672/sodumavasoso_sugenufefigu_tinivotosuna_sezomojodupebe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7013/6230/files/92085527288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2969/0528/files/82579115273.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1483/1780/files/nugikitogubadezevemakenez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2425/9992/files/4020863754.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3525/4171/files/sonujejafe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0537/0791/files/44957006428.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rirolor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2603/9452/files/losazojineberesagijud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38659434623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2438/2109/files/26367500422.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1620/8036/files/34498407778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5170/3706/files/duvelelozidelabovagivasip.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_off000086d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86D6 5392 bytes
SHA-256: 49d233f7c56efa1a130b36f16116087eeba13ea39053ec2eb5082daa123f5724
font_01_sfnt_off00009944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9944 10112 bytes
SHA-256: fc29be7ed08f0a5845ad3bebca77c26f94087c97bbb3395cbee6c681f73c38af

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