Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3bca1b344227cb…

MALICIOUS

PDF

71.9 KB Created: 2020-12-24 19:18:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-19
MD5: ff854d84227fc28f07c0e14e60399563 SHA-1: 01f7b699bc0cb081adff939fb6d7d774f13d7cfc SHA-256: 4e3bca1b344227cbca20e3088b55f3d471aa7c768e8c2b779c31886601da7e2f
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://trafftec.ru/wb?keyword=anime%20live%20wallpapers%20chromebook PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4466364/normal_5fae0aad52814.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501482/normal_5fb5fc148a403.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413587/normal_5f9cf70e25c70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413983/normal_5fbd8121f348f.pdfIn PDF document text
    • https://cdn.sqhk.co/xinovupu/rJhbhbt/child_learning_abc_video_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485580/normal_5fcb2e94b88cc.pdfIn PDF document text
    • https://sewizejego.weebly.com/uploads/1/3/4/6/134679492/lejujagituv_pepis_gozisumokowun_zusunem.pdfIn PDF document text
    • https://cdn.sqhk.co/femuzetoj/nggjx1b/thruxton_classic_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rotowan/2019_hollywood_movies_in_tamil_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2bef39d2-a1fe-4c11-b69c-37982b4bead1/82182268681.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6915bd60-e719-430e-8a4d-71d68c7f8129/anime_dlr_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/nozazodivin/pyramid_of_numbers_definition.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4A 5520 bytes
SHA-256: aa9d2d092fa9698dc9ab574cd78d70c9d83c1ab22b8d27409507ccddd5e7547e
font_01_sfnt_off0000f0f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F0 10092 bytes
SHA-256: c25ff2c17c74eb90e12b4e79d8ebdf7b1ddf94c589c25287a220504cab611fe5