Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3e2a699f1a666d0…

MALICIOUS

PDF

44.3 KB Created: 2020-10-14 08:27:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: f2850f897ecd488704fd7013cbfffbc9 SHA-1: 756ef3dc3606695505023f76f2ef3a106a143529 SHA-256: e3e2a699f1a666d04ee44660cd76f3542d19431b04416ce66c8953a414a94c74
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://cctraff.ru/strik?keyword=tracing+alphabet+worksheets+for+preschool In PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/987b21c6b.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kirorafagosox.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/tixobenudofezibet.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/kopiwu_gotatumeturi_bovejixegas_vivikow.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/35b0a7b2-168b-4ea9-be2b-bb29a218ca90/15721715531.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cd42b8f-be93-4028-95ed-b9cd6a747597/fapanezadidukusovuxakivow.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1877b6cb-b6e7-4e68-92b8-9cde43a147f3/tugoborubenofikeni.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95df297b-75d8-4ac2-b828-7cf9f25a4ef9/13628568624.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79640919-08ec-4c12-b3ee-89a3523d06ba/zujojapug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4503/5418/files/webodimamemufowodezoxomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/4760/4383/files/19904287722.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/1030/4418/files/75kg_to_lbs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94c8ef96-0ebb-45e8-b131-31ea20f23524/39309591886.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b4c80e3-519f-47ad-b725-2dd2e162877f/99213849378.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8c352b96-e5b9-4c37-b779-ea268b5420f8/28190987141.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_off00006e7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E7B 5524 bytes
SHA-256: 01e943bbdf202b5247bd26d8f4c6ceeb34e46715b0e11687e80d2c6631c4dbef
font_01_sfnt_off00008147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8147 10288 bytes
SHA-256: 3b251db54dc3250f290ded7ef4c730784085fff9d5979de4fa4e54bd491aa092

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