Malicious PDF — malware analysis report

Static analysis result for SHA-256 3494052642601cba…

MALICIOUS

PDF

42.7 KB Created: 2020-10-27 10:48:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 84db89ca008c560ec93ac50ae28cd244 SHA-1: 8dc5a2d4d24df2aeb51e0814755f31a1030494b6 SHA-256: 3494052642601cbaa642f043c4a20c8a939840f7e6c97d83403fb8f49d5e9116
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=wondering+where+the+lions+are In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f87513aea873.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369524/normal_5f87e93c0f72c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367019/normal_5f87380203b5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370744/normal_5f8a286e93fc3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f870be52d658.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376404/normal_5f90d8db6dcba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368978/normal_5f89eb823b1e1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377909/normal_5f8bd6187eabc.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005c7a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005c7a.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off00008f45.bin)
    • https://uploads.strikinglycdn.com/files/f3b5339d-204e-4224-83e7-e4930b7b5b2b/79176288748.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5049/2323/files/ribesukevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6590/8123/files/vonejojuzawugezibiru.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/pazetowelububiwinebe.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/gps_vehicle_tracking_system.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/bsc_biotechnology_syllabus_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxadol/wozojosifisa.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_off00005c7a.bin)

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005c7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7A 4980 bytes
SHA-256: 73c990deea30dbe1982493f1976887716bf689092d8629ed3561a3ff3514f415
font_01_sfnt_off00006d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6F 9984 bytes
SHA-256: 492b56b6184c512684c44d87206270ded9d836de8e6349c9f92b734871f9f0cc
font_02_sfnt_off00008f45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F45 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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