Malicious PDF — malware analysis report

Static analysis result for SHA-256 e20e22efcca1ec91…

MALICIOUS

PDF

65.2 KB Created: 2021-02-20 05:28:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 333d878e615e6b81fd12db64cf1767e9 SHA-1: 994e7e28ea723b1dc7ddeca18e9f5f4acd468758 SHA-256: e20e22efcca1ec911cfa1c563e8e2c585d319a48b8e582f4ec4b763c444a51a2
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://jottigo.ru/wix?keyword=tv+guide+austin+spectrum PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481665/normal_60234a9ad8e99.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476757/normal_5fe54f5d0a44a.pdfIn PDF document text
    • https://cdn.sqhk.co/pefisemise/hhTQ4eq/78672490679.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449181/normal_6023de5ab05be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466154/normal_6027c263f04f4.pdfIn PDF document text
    • https://cdn.sqhk.co/fuwufupi/jgo6pje/gesevibajivarafokoko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416501/normal_601d9fe59b0b1.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/j8CdGkP/mlb_perfect_inning_2020_batting_tips.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447250/normal_60144af9c65a0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379854/normal_5fdeffe6c3996.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385648/normal_601da6241c209.pdfIn PDF document text
    • https://cdn.sqhk.co/bijininabex/hd9Qjjf/7365470918.pdfIn PDF document text
    • https://cdn.sqhk.co/lizasizova/HBnggie/jojufukuvaka.pdfIn PDF document text
    • https://cdn.sqhk.co/gunuzuli/hdjcJjh/method_of_teaching_learning_approaches.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4391303/normal_5fff7203bda82.pdfIn PDF document text
    • https://cdn.sqhk.co/diwewiduvaz/dhbiDl7/mr_guns_and_gear_bio.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387243/normal_5fd161197f891.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c36b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC36B 5368 bytes
SHA-256: 7aa13d5a2d7b5009fed1b51e5c2d55420f1fd8e024cc66c13744350baaf4bb38
font_01_sfnt_off0000d5a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A5 10160 bytes
SHA-256: 309e9ac093385ca524d9bdb9ea2279e8236a10f312e74a81724a3108a179d975

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