Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8624bedd5e8d0d0…

MALICIOUS

PDF

68.7 KB Created: 2021-01-27 16:38:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: bc9f96f7180c3caef2d24b7f6cdee0f2 SHA-1: f5ae9e4be919ee2c12264461e0bbb9565a797d2f SHA-256: b8624bedd5e8d0d0543c0fc0cba7524b4da66f35fcd8f8c0aace21d4361421d9
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://bologen.ru/aws?utm_term=broken+seether+violin+sheet+music PDF link annotation
    • http://jarizodej.22web.org/28963310915.pdfIn PDF document text
    • http://copyrighthelp.info/22336916857oy5u9.pdfIn PDF document text
    • http://ueuniti.xyz/razer_synapse_not_openingjny1m.pdfIn PDF document text
    • http://mishabelle.ru/83097289709hn514.pdfIn PDF document text
    • http://help-business-media.com/download_game_cooking_tycoon_for_pcjzqkf.pdfIn PDF document text
    • http://tevfikyuce.xyz/denver_gem_and_mineral_show_2020_coliseumntrqu.pdfIn PDF document text
    • http://tehnotop.space/70412006940j5n8w.pdfIn PDF document text
    • http://netewe8.xyz/rabiwirimudirzbh3.pdfIn PDF document text
    • http://choosenews.space/72342764186yyhm5.pdfIn PDF document text
    • http://ourfutures.space/download_subway_princess_runner_java_gamenup36.pdfIn PDF document text
    • http://kojewotezigu.iblogger.org/boomerang_africa_games.pdfIn PDF document text
    • http://luvatok.66ghz.com/nofatolorexomomobiwanom.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/wetevali/68522336923.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/occupational_safety_hazards.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/rituragudoxopigekosawi.pdfIn PDF document text
    • http://ketanuviz.epizy.com/nujovovenajujajedixadaj.pdfIn PDF document text
    • http://rakemexovujepez.epizy.com/wakalibujajatuzepoga.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/92932942083.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_off0000ceb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEB6 5004 bytes
SHA-256: 8e6d047d3062422338c68f74a268a94b8d5c896b5a72b016822421b84b3a6014
font_01_sfnt_off0000df9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9F 10752 bytes
SHA-256: cf015a56be9533a56342c770efea28989e75199058d14d9ccfc079cc488718b0