Malicious PDF — malware analysis report

Static analysis result for SHA-256 387a565d229f870b…

MALICIOUS

PDF

68.9 KB Created: 2021-02-16 22:37:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ba73c663f367c417ec8bbe5799d16be6 SHA-1: 332e8aa6361cba6996b8f83a8aba173176f6bf62 SHA-256: 387a565d229f870bbb72f751fadda60c63870d94deac5722fc343becb09b8719
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/wix?keyword=eugen+goldstein+atomic+theory+date PDF link annotation
    • https://cdn.sqhk.co/pigexebobe/Phghggd/waterfowl_hunting_gear_checklist.pdfIn PDF document text
    • https://cdn.sqhk.co/rogapakaler/8jd9giW/wetowamepere.pdfIn PDF document text
    • http://morpeoplelife.ru/rudram_namakam_telugufrk76.pdfIn PDF document text
    • https://cdn.sqhk.co/nanijamu/xegjyLq/duvej.pdfIn PDF document text
    • https://cdn.sqhk.co/wixexozesila/WWOdidY/duvadadawopatobiregasa.pdfIn PDF document text
    • https://cdn.sqhk.co/fugolamudara/5ihbhaA/97915467707.pdfIn PDF document text
    • https://cdn.sqhk.co/tosobulig/zjer9id/5412634765.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482870/normal_5fe4c685c1b20.pdfIn PDF document text
    • https://cdn.sqhk.co/palevisi/jbicF9g/jisexolafujemikimizo.pdfIn PDF document text
    • http://power-guard.shop/your_beauty_mark_dita_von_teeseaht58.pdfIn PDF document text
    • https://cdn.sqhk.co/tamurikubol/ihgdha2/69144274219.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481402/normal_5fd385f96ea53.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/gotenukevepunin/first_grade_math_intervention_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/collocation_activity.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/34272960973.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_off0000cf44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF44 5412 bytes
SHA-256: 452c8d7bb717e2a56436b2d6275d870f3d79fb99277ba80313581a91de71532e
font_01_sfnt_off0000e18c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18C 10892 bytes
SHA-256: 8ce2fca3249338d914b9ac4709cbc9737aff4798638b36c1d2cf88c993ff5e20