Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ad156c0c325df98…

MALICIOUS

PDF

70.7 KB Created: 2020-11-23 23:57:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: a7423295a25449e403e3fb82b0addeeb SHA-1: 6dae576a61901a48d090de443b7e24b725e6f2c1 SHA-256: 7ad156c0c325df98d4c0518d1aa18394a7bfbd89e1d3bd0978c4296efe89187b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffset.ru/123?utm_term=crack+the+case+game+questions+and+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4463812/normal_5fb80dd3ee2f9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/winemekavinuvajabi.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/uitzending_bijwonen_ziggo_formule_1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3feb409b-b720-4589-a3f5-9fad9a06786d/16392347827.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/old_english_heroic_poetry.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/movie_download_free_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/xanebavifamopez/lixasi.pdfIn PDF document text
    • https://s3.amazonaws.com/faluzotixupi/country_risk_analysis.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/ruthless_by_william_de_mille_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/big_ideas_math_red_teacher_edition.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c96d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC96D 5508 bytes
SHA-256: 6f5f5a414471eac0d962c3816c781dbb5c1058376f351baa107d6a6ab8337695
font_01_sfnt_off0000dc04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC04 10564 bytes
SHA-256: 729eb78ffc462f53979bfe7b7b6fa06963eb8faee84561bbf408558fb5e97b18
font_02_sfnt_off0000ffe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE6 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3