Malicious PDF — malware analysis report

Static analysis result for SHA-256 018152cfbdd7aab4…

MALICIOUS

PDF

67.2 KB Created: 2020-12-29 17:44:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-08
MD5: cd10eba4f66bab36ad4b5e7c560748dc SHA-1: 8b5586d4df9acfc7d263775f1be1a356c05ffc46 SHA-256: 018152cfbdd7aab4533b1c0cb585b5b1a76cbe8de0ff8d321b1d0b86b098c601
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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/wb?keyword=pilot%20mountain%20canoe%20camping In PDF document text
    • https://s3.amazonaws.com/xamibudasagas/korupeleberapewezobepif.pdfIn PDF document text
    • https://cdn.sqhk.co/lawafopugu/hjLJyha/kodokovetakapezuxil.pdfIn PDF document text
    • https://cdn.sqhk.co/javufikari/jaRhbyM/61850545917.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/boruwim.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/mazexixoxedir.pdfIn PDF document text
    • https://s3.amazonaws.com/dinisemowoge/savameliki.pdfIn PDF document text
    • https://zuxosudeti.weebly.com/uploads/1/3/4/3/134359900/matasusap-wokedubesibi-xilejidasatimaw.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000cbd9.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000cbd9.bin)
    • https://uploads.strikinglycdn.com/files/d461285f-6fcf-4fb9-a40b-156462b29032/lesson_3.1_practice_a_geometry_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75136cdd-9e5b-4c36-80ca-d59291f588bf/fruit_from_a_poisonous_tree.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93232c88-4350-481b-bd3b-aa27b6961706/what_do_r_and_s_mean_in_organic_chemistry.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25ed7b7f-00c3-4fba-9178-f027fe57952d/rajesh_kumari_dietitian.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06c90202-121c-4379-87f7-ef3346d001cb/79891888972.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_off0000cbd9.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBD9 4980 bytes
SHA-256: 991cc36a18c73e93e0b398e9cd55a06f4e24596c8648c13df64ea4ea86fbfb16
font_01_sfnt_off0000dcbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBD 10460 bytes
SHA-256: 8e3dccb8f6f75bc9c329aa9e58c57a92541ee3ef4139e680dcbc1b274947808f

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