Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f648b1effb4f02a…

MALICIOUS

PDF

40.1 KB Created: 2020-10-09 11:19:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-30
MD5: 52f682796fc0dafe10de6ea69aaea997 SHA-1: 0e7e7d73e92fbb6d69052fa84ff61e3c27149c0e SHA-256: 8f648b1effb4f02acb0e36e5ec1429752c92ebe0364e1b61642a158bdec8d21a
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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/strik?keyword=d%2526d+3.5+lesser+restoration+dndtools In PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000631c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000631c.bin)
    • https://uploads.strikinglycdn.com/files/a93638e4-9884-48be-8c7a-87739b13bfe8/77657518902.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/556feadd-31c9-46ce-97e7-5036df081e99/5389758435.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1e47b4c-0119-4679-b943-f5fb964b54f1/fomugir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6216/4644/files/lonely_planet_mediterranean_europe_travel_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8155/5350/files/62054240440.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96f12f2f-5044-40a6-86da-77bd80445d69/21554017368.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b5a9c06-807e-4ce6-b351-d251646bf48e/24725165191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1351/2100/files/toxunebonawataxirozano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/4524/4058/files/sanirafetuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2317/0710/files/44364687532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4158/5314/files/6999025391.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/2931/8808/files/beauty_by_earth.pdfIn PDF document text
    • https://medlineplus.gov/vitamind.htmlIn 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_off0000631c.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000631c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631C 4156 bytes
SHA-256: bae8c65fbb2985f8f9e3f3f2bcf16a0f9e8e1e4a7d5ebf1135d71e3fbc9ddb2e
font_01_sfnt_off0000714a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x714A 10304 bytes
SHA-256: 02f00c50869c0837291c35b179c36c0b11ded8e84cbef1521986cce03b773248