Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbed19ddf3b2d44f…

MALICIOUS

PDF

43.8 KB Created: 2020-10-03 03:17:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-24
MD5: 4e039b608c7ee895fa8f13d64f628594 SHA-1: 1bd3d8e6e610099a83014cb9fb9a80ee240425da SHA-256: cbed19ddf3b2d44fa96b1ba98dded61d7689b69f0647ff5fb1d83515037183d1
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=rimworld+additional+joy+objects In PDF document text
    • http://files.videotrowbridge.org/uploads/1/3/0/7/130738722/ribabedu.pdfIn PDF document text
    • http://files.jessicafeldheim.com/uploads/1/3/0/9/130969075/rotixi.pdfIn PDF document text
    • http://xelax.allmybees.com/uploads/1/3/1/6/131637921/gilovimize.pdfIn PDF document text
    • http://bipire.pajamadaze.com/uploads/1/3/1/6/131606183/6829325.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006c7f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006c7f.bin)
    • https://cdn.shopify.com/s/files/1/0440/7833/4117/files/mogaminifugufaboberifij.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/6555/9190/files/lovers_in_bloom_do_ji_han.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2835/1640/files/bash_bish_falls_state_park_swimming.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6935/3383/files/proton_charge_in_multiples_of_e.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97c0b362-88fa-4dd6-b96d-df32066b937b/42861490389.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0ec060b-28b0-4926-8605-2efa54b5b8f9/zesotinevodejizu.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_off00006c7f.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7F 5500 bytes
SHA-256: 1506956e0c64c88b1f84fb711c3ea10fcb2a17a11d954030f62b5fe7ea107903
font_01_sfnt_off00007f33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F33 10528 bytes
SHA-256: 143027667913020ec999bfccb4f74f4041606468300b90d17e13dae4abb70f80