Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7165b7707298e7…

MALICIOUS

PDF

49.8 KB Created: 2020-10-10 20:56:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-18
MD5: 8fd85314a7d2370da2eac30898191339 SHA-1: 42c54cb8b47f19c28cfe56c13662e7c44c637c6f SHA-256: cd7165b7707298e777540f024301bdaeb5bd479e53c5dac904bdea5c37d837ea
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/pify?keyword=reglas+basicas+del+voleibol+con+imagenes 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/a64ef3d8-16b9-491b-8310-111efc7f3ca0/53862995128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c57448a5-2113-4805-9661-f6826e7d546b/65638553060.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/354901ad-c2f2-46e1-8091-d946775e2b0d/jibija.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dec4cbd0-3c38-4bf3-b315-b068a803a725/19163112600.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d9092a5-f5f4-46da-8046-1499d5f23b15/2339404463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/1022/7876/files/no_polar_or_nonpolar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4827/4582/files/roxatugituzemijiped.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/9624/5919/files/factoring_expressions_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/9066/0513/files/99192647434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/3627/3559/files/greece_arcadia_high_school_football.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dba0e5a-da9d-4348-8bb1-9734724aed02/59975549077.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9629b3b4-ead3-468e-a456-349b8046dd7a/3725012489.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d4e732f-b541-4d24-b2ab-439508b24206/11854745760.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a56d6099-9fb4-40ac-8ea1-3910ee76c0f2/24146410840.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000653f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653F 5368 bytes
SHA-256: 831ee66dcedf06cb9f26f6901259b5828d3d75e1e6a4b5927790829338b2f6ac
font_01_sfnt_off0000776c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x776C 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off00007ff9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF9 10892 bytes
SHA-256: 8c019be2392ddb11e2eb7671a8f6d7c1785f8e9e3a2e06a03ff4b105b929abf2
font_03_sfnt_off0000a3c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3C0 16312 bytes
SHA-256: 975089639afea594160f6daa1ae948ffc4125994d61a9fd32dce02580f7b6b15

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