Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa83d094e3f9347b…

MALICIOUS

PDF

73.5 KB Created: 2021-01-04 04:04:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-06
MD5: 9bcf727520d0ca8f0dc21a352b01c7c5 SHA-1: 968650a248cdf3a2ee9a2df4b899544baa5b3665 SHA-256: aa83d094e3f9347bc870fd8fabdd5d8de03c2fbade70f9ee830021634ed6a37f
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffine.ru/wb?keyword=cosmology%20and%20religion In PDF document text
    • https://static.s123-cdn-static.com/uploads/4413228/normal_5fcc9c8a50985.pdfIn PDF document text
    • https://kinojapi.weebly.com/uploads/1/3/2/3/132302846/bibobo.pdfIn PDF document text
    • https://cdn.sqhk.co/maxevurux/cdxjabm/73243038620.pdfIn PDF document text
    • https://cdn.sqhk.co/reretukida/bjciPhi/septic_tanks_in_algona_iowa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389821/normal_5ff27435bcd99.pdfIn PDF document text
    • https://semezuzuxikazug.weebly.com/uploads/1/3/4/2/134234688/6908417.pdfIn PDF document text
    • https://cdn.sqhk.co/lamajemomu/heigges/one_punch_man_destiny_tier_list_roblox.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f36cbe8-e309-4628-8e5d-c71fa2c62b0e/46442670012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1b4e893b-09f5-415f-9c17-5a77b33e6f90/wedetoworopazupepixivili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/706abb09-f276-491b-a4f2-d2139f8ef0fb/wexokeboxorekabesenerim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4085457d-da51-4932-b15c-d164faa56d1a/pound_cake_glaze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/def2b2c6-8f09-44e8-a61d-9d56d2844c3d/fm_transmitter_app_for_drive_in_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f98bfe67-9b46-453b-a691-8e6fcdd39374/92828084934.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_off0000e35a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE35A 5152 bytes
SHA-256: 2799c31f02c80e2ee706bed6772a852d93931520edc8898f1a69bd47e833cc69
font_01_sfnt_off0000f4c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4C7 10700 bytes
SHA-256: 55fb700133ab7046d3648014cc068d9a3d8eab3a47b6cf7ebc22914ce5d0ebb6

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