Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cd9cfd7d500dd88…

MALICIOUS

PDF

38.3 KB Created: 2020-10-03 03:33:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-07-15
MD5: ce7aec4ad231f88f64aeb373306a7011 SHA-1: d8d1ee244149fda85b4a349a21a2af570ddb215a SHA-256: 4cd9cfd7d500dd88237e7ab09a73c53c7cd7c29368dff4d5800147ccf3b191d8
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://cctraff.ru/strik?keyword=mgsv+weapon+customization+guide In PDF document text
    • http://files.lovedovecottage.com/uploads/1/3/2/6/132695679/6603451.pdfIn PDF document text
    • http://moxowo.seadreams1.com/uploads/1/3/0/7/130775971/c3bd162c8bf25f2.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005772.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005772.bin)
    • https://uploads.strikinglycdn.com/files/f343e57c-46a0-4ee2-8574-e29bdb192c52/farofepozifojapejexuga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66888daf-750d-425e-8125-9821fe40ef64/70713148767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec16f9f4-f8e9-40e0-890f-f3cf68728a96/31260371498.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/973b1223-2c0d-4611-85c6-88c7d3aa70af/zatenawexusipon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2922/8441/files/pekamitowewibiwevadigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0469/4697/5905/files/work_energy_theorem_worksheet_doc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3145/2574/files/9769140381.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3894/6981/files/79307547129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d8e8949-d531-4e14-b37c-42f7fec0f580/zutuwanixezagebudumimov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7dec07a-2fb3-4620-960c-ccd2bfc7bd2c/40780714476.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7af2f3ec-ee5a-4371-8c8e-8320bca72d06/47702846027.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f027319-5425-468e-bbc8-b0ebe502fd8b/besokilakodizepowobaxito.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/feb39d7d-436b-4224-8276-80d5ea8c6c58/welurobibitedamate.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 extracted file (font_00_sfnt_off00005772.bin)

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005772.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5772 5472 bytes
SHA-256: 29914d98e72dac421429293bb60fd167933fdaf2d7d8b6998cb9884a479a4428
font_01_sfnt_off00006a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2C 9948 bytes
SHA-256: c85703e4b44fc792de4320badee65a43837fb2a44f30a7aa644c8da20bb33662

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