Malicious PDF — malware analysis report

Static analysis result for SHA-256 27546bfc8bcf653a…

MALICIOUS

PDF

74.6 KB Created: 2021-02-24 21:01:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1beb69f34be1d267c4628842c62359d2 SHA-1: e696f63921ec51715c0192a63ac921c8c6ee1633 SHA-256: 27546bfc8bcf653aff9815d751dc99ef95d9384571d01dfc82c9f41b6bbca6fe
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://jacksth.ru/aws?utm_term=ariens+deluxe+28+sho+used PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4447079/normal_5ffe611675029.pdfIn PDF document text
    • https://cdn.sqhk.co/lojibuwe/iW3hiu3/monkey_meme_face_looking_away.pdfIn PDF document text
    • https://cdn.sqhk.co/jakatote/gjgjjbd/run_3d_unblocked_games.pdfIn PDF document text
    • http://mujetogavafe.22web.org/17850433515.pdfIn PDF document text
    • http://reflectionss.space/863366302914qkg3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477864/normal_5fc9f5b30ca09.pdfIn PDF document text
    • http://hookup153.fun/story_games_for_android_apk2hyjz.pdfIn PDF document text
    • http://xijulefabogi.getenjoyment.net/pavefivaruwifutivimak.pdfIn PDF document text
    • http://4d-5d.com/wafamilavigulujuxisekapuc01f6.pdfIn PDF document text
    • https://cdn.sqhk.co/xavonepez/JiiKhg8/rozejifanowumodixitenijig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484805/normal_5fd61255b5a16.pdfIn PDF document text
    • http://pushbiz.fun/refadqnz3y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474979/normal_5fc7e4b1cbfcc.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/jozaponi/sakumid.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/folinopome.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/talasap.pdfIn PDF document text
    • http://gowobubovojot.epizy.com/cisco_ccna_book.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/libukir.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_off0000e796.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE796 5088 bytes
SHA-256: 4f85c9cf3168466f27386027784269b24f305dbcf4b69d3e0e895fe2a5110ac8
font_01_sfnt_off0000f8e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E1 10812 bytes
SHA-256: 3a663fa87fa1c1c4f3a83b8b3bed76c8f76f084ef29f45d97a71f07b3bd48eda