Malicious PDF — malware analysis report

Static analysis result for SHA-256 b389df91342eff22…

MALICIOUS

PDF

44.9 KB Created: 2020-10-03 00:09:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 1babdc44562a0fe633b37922b1be7e11 SHA-1: e12e3ba1ea325684edf77dd2411febf738a10afa SHA-256: b389df91342eff227ee30ebb7edaf9d7db115655943d1119967b9f0c602ccabc
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/strik?keyword=dear+evan+hansen+sheet+music+requiem In PDF document text
    • http://files.barrymaguire.com/uploads/1/3/1/6/131606968/subolulaxipa-jiromogov-povuwifabakepo-vodige.pdfIn PDF document text
    • http://jukem.sandrasmithquilts.com/uploads/1/3/0/7/130775795/4975861.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/3bf588aa-be5f-40a4-a5a1-3a34c831cd02/laxukizazutamuda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cc71fb2-ddfe-4d61-9982-a4defc08dfed/14822934320.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cca018dc-c3e1-43af-9a71-7bf5fcf2afe3/84940670099.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f07cb9d3-6d2e-442a-b846-7b699f794165/wilixuwakudunatirugurowu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb2e0e53-2691-4abe-8567-76f4a1afde53/rulowogoludonotew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a57866e9-6b9b-44a2-a8f4-39158141c7e7/ledomexevugivurinu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e57518e8-e2d2-4e20-b4cf-c7298d55e9ef/83259859305.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b9c23820-a2e8-4b4b-8b22-a0c1c08a3731/50212630816.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9616/0921/files/beredazelavira.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6703/1200/files/how_old_is_jason_aldean_wife.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2746/3324/files/6958385372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/57218203695.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 2

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_off00006c50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C50 5192 bytes
SHA-256: 8faf82222881bb0e95de66de2cf36df4e21d9a5b0eb06300ef7854e0374cc80f
font_01_sfnt_off00007de0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE0 13128 bytes
SHA-256: 0bbd225ab632a513e02355d6901ba8dd5c353779047ce655d521c45e8732a461

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