Malicious PDF — malware analysis report

Static analysis result for SHA-256 406b0264578f8f45…

MALICIOUS

PDF

68.2 KB Created: 2020-12-29 23:25:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 58aefb1c12f9ba3a966eccd56de3159b SHA-1: 1b92ca935db1530889eb874c157c1ef28e12662a SHA-256: 406b0264578f8f453352a8c3a1cb1b3efd57ee1ae28a179fbbbcc09b736b1b74
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffmen.ru/wb?keyword=empire%20type%20games In PDF document text
    • https://cdn.sqhk.co/pozuwifofub/gjxvljf/bidopafifuvoxozo.pdfIn PDF document text
    • https://cdn.sqhk.co/diwomijo/jiaghjc/who_dies_in_endgame_comic.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454665/normal_5fb66968ab1cf.pdfIn PDF document text
    • https://cdn.sqhk.co/lokalofobox/jejbcC3/45600068526.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468837/normal_5fb582c9d4e16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404108/normal_5f9dba3bd792c.pdfIn PDF document text
    • https://cdn.sqhk.co/salenasova/gdpOFhf/cruise_ships_out_of_galveston_or_houston.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389824/normal_5f9341dc3f7d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404296/normal_5f9c820b2628b.pdfIn PDF document text
    • https://cdn.sqhk.co/zezoxomop/93ijqhi/24161186769.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxabofapuw/a4hiKig/62489032158.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/73a9065b-276a-4484-ab0f-607207331ccc/sisimumivugolajez.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7221309b-3da9-4623-8352-4163119106f4/exercices_corriges_d_atomistique.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/471e9e6f-5da8-4c56-8b84-ccc1d818bf2e/sixax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c205750a-d967-418c-90f8-db34fdcf4628/46046521466.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE18 5164 bytes
SHA-256: f7620deeb39b81df3fc246ac29b470646bd659fb469fd6934a7bd6a34ba2e8db
font_01_sfnt_off0000df9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9F 10816 bytes
SHA-256: 7fa9d93644f6b51fe8a3dd5beb619c01c2215edd7adae302665d60ac74360be4