Malicious PDF — malware analysis report

Static analysis result for SHA-256 4043f0195869bda1…

MALICIOUS

PDF

69.0 KB Created: 2021-01-25 13:17:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a44f561ae1ec07392c5877a468535be7 SHA-1: 612c766e63f65ae10a50f1b7ffe77454cc2314b9 SHA-256: 4043f0195869bda157f96a667a62a4be4e8195aed2cc3c5702ea88fa3a112e8c
136 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
  • 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://seumenha.ru/wb?keyword=find%20cisco%20switch%20serial%20number PDF link annotation
    • https://s3.amazonaws.com/xopugup/adobe_flash_player_10._2.pdfIn PDF document text
    • https://cdn.sqhk.co/kagalitisup/hqmjegf/26803027039.pdfIn PDF document text
    • http://cookwellbakewell.com/87549342730q34so.pdfIn PDF document text
    • https://cdn.sqhk.co/fipuwemupe/jbJ4iai/22625753087.pdfIn PDF document text
    • https://cdn.sqhk.co/lafugafeniki/Cxigqgj/zombie_killer_game_download_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/dmv_written_test_questions_and_answers_illinois.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/sample_poultry_business_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/pekupimino.pdfIn PDF document text
    • https://cdn.sqhk.co/berirenike/b9rieXH/3973746824.pdfIn PDF document text
    • http://svoydvalend.xyz/wotojemuxumeveven4npu.pdfIn PDF document text
    • https://s3.amazonaws.com/jidagafinuxesu/50264797598.pdfIn PDF document text
    • http://genusttwsr.fun/69628239573yug7z.pdfIn PDF document text
    • http://olipaka.xyz/diskdigger_photo_recovery_download_apkh6kmj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415331/normal_5fd8842ec60f0.pdfIn PDF document text
    • https://cdn.sqhk.co/gisopagipize/CYfjgih/38154697522.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_off0000d120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD120 5368 bytes
SHA-256: 860c4ff60f744fad30e4eb875498ae26646396494bb34c11cac9362ffa5fbf09
font_01_sfnt_off0000e348.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE348 10576 bytes
SHA-256: 539b162bcb715226fcf2c9eaf60792fea891c519c374c874fbb29ec0043542c7