Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a50c569674013c4…

MALICIOUS

PDF

47.4 KB Created: 2020-10-15 00:34:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 53dc88cb4527166fc9e9ba7a719503b9 SHA-1: cd066e65576272d2e210f1bf68cece393958c0a7 SHA-256: 6a50c569674013c458507723b1106c3f7b40a749feedc8a1983faeb15018f2e6
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=dwdm+basics+tutorial+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f874f9d289fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5f876e2f0c43d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367650/normal_5f8767a2e8d34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f876c2299e24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366015/normal_5f86fedf98283.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f8737f80d760.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f876e2c1a401.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f8700713c24e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366017/normal_5f87082116924.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367951/normal_5f876a993de47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366306/normal_5f87688073903.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5f875a76be52e.pdfIn PDF document text
    • https://site-1038353.mozfiles.com/files/1038353/napekovewifibakafeve.pdfIn PDF document text
    • https://site-1048442.mozfiles.com/files/1048442/51663262291.pdfIn PDF document text
    • https://site-1048248.mozfiles.com/files/1048248/social_media_research_paper_thesis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367665/normal_5f87682e2c02a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365553/normal_5f873f96ccd98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366642/normal_5f87674e63773.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367644/normal_5f875beb2393f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366358/normal_5f8745f12f9da.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/030ba47c-a182-4ed6-b71a-1387c39770da/87172415870.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f59ed34-b20e-4854-af86-ce7da6355366/tukarife.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E12 5192 bytes
SHA-256: c6301a27d6ef65451a4d21f5a205fd9b13c3abf602b47c3d0021e8aa4d895e28
font_01_sfnt_off00007fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBF 10004 bytes
SHA-256: e43ee62d093bb50286188d9d15d8477ab7de566cdadd3ed42f55b74b8e780949
font_02_sfnt_off0000a1f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA1F6 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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