Malicious PDF — malware analysis report

Static analysis result for SHA-256 949ddc5af36de881…

MALICIOUS

PDF

37.3 KB Created: 2020-11-03 20:47:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-11
MD5: f6ff27388f9ee630efb9af976ab815dd SHA-1: f0a4d16fa030bcd2c79bfd5addd4ce63b038f401 SHA-256: 949ddc5af36de881c7932d117fda66cc3bf1f602846e36fa35738ea9051613cb
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://ggtraff.ru/strik?keyword=skyborn+altar+skyrim In PDF document text
    • https://s3.amazonaws.com/kakekojezutok/6096797927.pdfIn PDF document text
    • https://s3.amazonaws.com/lumixi/11971351358.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/15373313902.pdfIn PDF document text
    • https://zekuwatifakaxi.weebly.com/uploads/1/3/2/8/132815855/1c58f.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/physiotherapy_exercises_for_shoulder_pain.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/estrofas_del_himno_nacional_de_honduras_y_sus_explicaciones.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/57270707571.pdfIn PDF document text
    • https://s3.amazonaws.com/rubidokezive/tirujedufil.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/linetuxavav.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/mario_benedetti_poesa_con_los_jvenes.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000051ed.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000051ed.bin)
    • 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_off000051ed.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51ED 5240 bytes
SHA-256: 7595b03cc651f20c6893955f63e8b426bf31c7cf2894908ac202f263eeefbd30
font_01_sfnt_off000063b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B3 11288 bytes
SHA-256: af22fd6d811d7f1ba352b5bb5f661013a126dc7af5da41887b116261178f956d