Malicious PDF — malware analysis report

Static analysis result for SHA-256 f225769b20a09d7e…

MALICIOUS

PDF

78.6 KB Created: 2021-02-21 22:42:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 796226f150307b12d9fa8b5e13437937 SHA-1: ab71bffe1eb92d6123e3accfc42e007bf0ec6a5a SHA-256: f225769b20a09d7ed0d84fded40f3948f126721b064da6a5424251a8c6aa2791
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/wix?keyword=the+great+gatsby+study+guide+answer+key+chapter+8 In PDF document text
    • https://static.s123-cdn-static.com/uploads/4478141/normal_60052034bf7ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388426/normal_6022605eef520.pdfIn PDF document text
    • http://kindraretterath.com/kipibavesefozijuravab5nxp1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369633/normal_5fddfe7c599af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388165/normal_602399804a6dc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369907/normal_5fce2901cef1e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373008/normal_5fdfa35e81868.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387718/normal_601a3582e9675.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414500/normal_600ae26c9d640.pdfIn PDF document text
    • http://zeweduzu.iblogger.org/what_is_the_most_mentally_tough_sport.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490720/normal_5fe1d1dd154ae.pdfIn PDF document text
    • http://center-san.ru/109626523067vys2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nadefivetokilak.rf.gd/49601225083.pdfIn PDF document text
    • http://kerizow.epizy.com/worksheet_on_solving_quadratic_equations_by_factoring.pdfIn PDF document text
    • http://bibijovefuvak.epizy.com/bolens_husky_1254_manual.pdfIn PDF document text
    • http://zefexulipovi.rf.gd/anganwadi_form_2019.pdfIn PDF document text
    • http://pinixivula.epizy.com/ue_megaboom_battery_replacement_service.pdfIn PDF document text
    • http://gegavolaful.epizy.com/82155990004.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_off0000f58f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58F 5844 bytes
SHA-256: cf4c98feb6a9c8a00a53c2c325dce54486f0a924b64665149bf07bc2778fe337
font_01_sfnt_off00010981.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10981 10392 bytes
SHA-256: 5af4174319d53ed078592ed8f8b06f907d4ef6dcbcd2f0d00c8611de40941e6d

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