Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc87649c15e5bef…

MALICIOUS

PDF

41.6 KB Created: 2020-11-07 14:01:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-30
MD5: c6e85f8c009c88d1f33a248cf62b6e9d SHA-1: 50f147ab1f9571507eb511cf887fdc5ebdc37d51 SHA-256: 1dc87649c15e5bef2a418f6594ad43d9120db6949be1d36db24e24a73c5c6172
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://gettraff.ru/wb?keyword=solar%20oven%20research%20paper In 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/a9846342-dea3-4254-a91c-a2e5d39b0b90/76022174015.pdfIn PDF document text
    • https://zenomanotape.files.wordpress.com/2020/11/manual_de_acreditao_hospitalar_ona.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd496bb4-a420-4ce5-9222-f7d40fc36585/silelejubeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bb2fe0e-0234-425a-8722-81c6565da5c8/6938710804.pdfIn PDF document text
    • https://fewelegur.files.wordpress.com/2020/11/43737742025.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65015f27-4220-4bac-ad19-49f8e41432b1/staar_test_bubble_answer_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a991b932-de44-445d-adab-a5bbb4c151ae/47306440484.pdfIn PDF document text
    • https://manetomimexa.files.wordpress.com/2020/11/lugotorizereziwatogukomak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f06407c-cc5c-4fef-8954-4cf293180a61/25236203165.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cee1fbc0-473f-46ad-a9da-8a735d178d04/are_tenzo_r_wheels_good.pdfIn PDF document text
    • https://suvarofora.files.wordpress.com/2020/11/lodebukiworidu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97144eb3-b44d-4a27-b066-2a235a948284/36612146814.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea3e44a9-fe6c-45cc-a5d1-72cbda431988/7414593452.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

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_off000064d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D4 5184 bytes
SHA-256: 6121b212c810f50f65982ffc2e3499299a5a6fb6ca836e24726885fe63224b29
font_01_sfnt_off0000767a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x767A 10468 bytes
SHA-256: 87d72ae306aca40cd52c091aa1232dbbb5d86888a484651f58fe23b1e91ab859

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