Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4cea1a94a9d1e0…

MALICIOUS

PDF

64.5 KB Created: 2020-11-26 01:09:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: 0a40b7d8223f51630cfc8ab575bf1f35 SHA-1: 4440c90a09f7fad3916628406495b03a015b7f03 SHA-256: de4cea1a94a9d1e028288f704efa7eaea31db6d83e2c1ace424db85578c00518
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://zubukuxazepezox.weebly.com/uploads/1/3/4/6/134600429/02792d44.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4424683/normal_5fa2a399d276d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487935/normal_5fafb45a88344.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401525/normal_5fb3c9099de96.pdfIn PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/sudigefi.pdfIn PDF document text
    • https://s3.amazonaws.com/xoxaneral/1_million_dollars_in_1940.pdfIn PDF document text
    • https://dekobela.weebly.com/uploads/1/3/4/3/134332871/gerefig_fezuwa.pdfIn PDF document text
    • https://gixeguxif.weebly.com/uploads/1/3/4/5/134522915/676101f.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/41350273767.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/ddo_reaper_leveling_guide.pdfIn PDF document text
    • https://trafftec.ru/123?utm_term=st+croix+county+wisconsin+gisPDF link annotation
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000bd18.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000bd18.bin)
    • https://uploads.strikinglycdn.com/files/51d09647-8ff0-47ed-88cc-9c9b0fa34d72/84900380416.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/240dfee9-a43a-4303-96a8-e6dfc5b42054/rovababesu.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_off0000bd18.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bd18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD18 5088 bytes
SHA-256: 469a95141ed5f27385fe7ed094720a83a02299200c58c8f8601a9c691f31ea83
font_01_sfnt_off0000ce97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE97 12256 bytes
SHA-256: 925b9b06c044bc94e2c46b4955c4c2f07158b31a5d8e3275b6f88476f5dbf3f0