Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8d7657d1013e30…

MALICIOUS

PDF

69.4 KB Created: 2021-03-01 21:32:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 945671f3f7f319efe105860580c6f8bb SHA-1: 9294a2c8304ddd20b6b8805ac6f599282f88ce55 SHA-256: 5d8d7657d1013e3058d6c51329f2af0f73d6680faa71aea2227a24ad60cf6e75
136 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
  • 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://leonvi.ru/award?keyword=how+does+the+setting+of+araby+affect+the+story PDF link annotation
    • http://ranking-se.com/genie_pro_82_screw_drive_manualb60ij.pdfIn PDF document text
    • https://cdn.sqhk.co/betewulo/hbhjmjf/33278576202.pdfIn PDF document text
    • https://cdn.sqhk.co/rumunefa/cSGcQwV/vareliwawofasefuguluw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444100/normal_5fe90b3075c0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384633/normal_5fd65fdb691e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415061/normal_6023c3a30c39a.pdfIn PDF document text
    • https://cdn.sqhk.co/gigatakel/PwhhGhb/university_of_denver_graduate_application_deadline.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456379/normal_6018c0865df16.pdfIn PDF document text
    • http://all-gopro.com/technical_business_analyst_interview_questions_and_answersdkewb.pdfIn PDF document text
    • https://cdn.sqhk.co/nikajovefer/DzHhchf/ice_hockey_games_near_me.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473340/normal_6017ab188aafe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369779/normal_5fce7a32d8964.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/vitelitubovuluj/do_tracfone_prepaid_cards_expire.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/14441217897.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_off0000d2fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FD 5544 bytes
SHA-256: dc0c90229530062786123c31d8a01811c733068415a978de165a14e38f344786
font_01_sfnt_off0000e5ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5EE 10148 bytes
SHA-256: ae06cc4b0d1b990f2abc941eb2dee7f095f8c46e52fdd1db31ed9eded738af68