Malicious PDF — malware analysis report

Static analysis result for SHA-256 47762fb8c3ccf398…

MALICIOUS

PDF

71.8 KB Created: 2021-02-13 03:01:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 2ac17f3f3acd0a3267fc39cccf9cb7ba SHA-1: 276d09effb422d66aec68a511b99fd26ea5f18d7 SHA-256: 47762fb8c3ccf3980f9c8a1a10d7993abd3a57977b1bb1324dd8dc5f453ef716
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://bologen.ru/wix?keyword=force+and+acceleration+worksheet+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424341/normal_6012119b2b6f3.pdfIn PDF document text
    • http://skywonder.space/afcat_question_paper_bookgrfkc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385435/normal_601446fb67296.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456389/normal_6004eec474d87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389353/normal_601f34943dfd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445866/normal_5fd666730e67a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454056/normal_60010d172b6c0.pdfIn PDF document text
    • http://es50off.pro/dragon_matte_liquid_lipstick_reviewtkd7r.pdfIn PDF document text
    • http://getyourscore.info/celulas_caliciformes_que_sonaqhtd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475392/normal_6016b63e4143d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447640/normal_600e05a21fc39.pdfIn PDF document text
    • http://ses-paypal.com/pixel_dinosaur_gamey0qz7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/counter_strike_bloodstrike_map.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/dushman_1998_full_movie_free_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/ziwufobuwajilipedolo.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/nebetatebipejizi.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_off0000defa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEFA 5136 bytes
SHA-256: 3615b439366d96ed97c949e4b48b87219aa481732fa3634b72cdf6b723aa6ff8
font_01_sfnt_off0000f080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF080 9916 bytes
SHA-256: 11275c005b9d368fc2caf6b642ff0d0a3a3a834ec18125a2eed07bfcb27f29b7