Malicious PDF — malware analysis report

Static analysis result for SHA-256 4786fea7e4ad72e3…

MALICIOUS

PDF

40.2 KB Created: 2020-10-05 08:21:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-20
MD5: 02ab9383d008aa0f2c40a6251f982134 SHA-1: b79b57c0f929786a69dd5a10dd26c62c8c98d70f SHA-256: 4786fea7e4ad72e3c2656ac0acb231e80ec7823d3b04f99204183656c0fcef40
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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=legionella+risk+assessment+template+word In PDF document text
    • https://site-1037142.mozfiles.com/files/1037142/watifomaladozowo.pdfIn PDF document text
    • https://site-1037026.mozfiles.com/files/1037026/lasitononexen.pdfIn PDF document text
    • https://site-1038898.mozfiles.com/files/1038898/77367390723.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/1/0436/6699/7398/files/tasuzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/0023/6704/files/longshore_transport_of_sediment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2329/3864/files/clifton_fine_central_school_yearbooks.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0de55ed-e27e-4284-a3eb-bc29cc76a4a7/93935623231.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53efe7c5-ee3b-48b2-8a74-915dec77420c/xavalexejizarogajulopereg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae3db573-2066-4543-9a5b-db0ef073eb20/74560160550.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b0445cb-b44b-44d9-97f4-e26b61c6d212/6839812382.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df83281b-3929-4e77-8918-3f452070939e/95456659854.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6450/6006/files/94603347409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7535/7860/files/tommy_bahama_beach_chair_how_to_fold.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/7915/8948/files/duxujajo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7950/7872/files/raid_shadow_legends_best_champions_list_reddit.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_off00005ebc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EBC 5376 bytes
SHA-256: 2a40bcf02a819e88e0fd23fd2c081dda149e30f80c4e07799dba3a6c94dad93d
font_01_sfnt_off00007108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7108 10200 bytes
SHA-256: db7758015116b300ccb2d771fb74e91121600be5d2fd9a8fb7f02c0fd14d6bdf

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