Malicious PDF — malware analysis report

Static analysis result for SHA-256 f84c43f5c552e202…

MALICIOUS

PDF

63.2 KB Created: 2021-02-16 19:16:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 847694c29735ce5d22258d314c94784c SHA-1: e905feaf505f954949bbbc1a5e4af41baa1cfff0 SHA-256: f84c43f5c552e2024b16a86e3ffa2d860d81744699adeb5a8607dfcbd7993aef
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://baarspo.ru/wix?keyword=instituto+de+cultura+de+baja+california+ensenada PDF link annotation
    • https://cdn.sqhk.co/rigowodikot/hjGvI0C/nusezafavoras.pdfIn PDF document text
    • https://cdn.sqhk.co/nemuvefik/hgjacgb/one_deck_dungeon_forest_of_shadows_review.pdfIn PDF document text
    • https://cdn.sqhk.co/badaxiloru/ocXibfm/zusatimewuku.pdfIn PDF document text
    • http://bluetea.space/bobamurisogobiwakuxoaq5cx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408584/normal_5ff416022da06.pdfIn PDF document text
    • https://cdn.sqhk.co/kazamepa/giPjdjc/video_player_for_windows_10_download.pdfIn PDF document text
    • https://cdn.sqhk.co/vojeruzujuzi/W6Ridja/one_clue_crossword_bonus_gone_fishing.pdfIn PDF document text
    • http://ovca.space/10_examples_of_concrete_and_abstract_nounsxz4vx.pdfIn PDF document text
    • http://lorenbayi.com/downtown_pet_supply_remote_training_collar_instructionsa545e.pdfIn PDF document text
    • https://cdn.sqhk.co/dekavaka/nhPhajb/59856496786.pdfIn PDF document text
    • https://cdn.sqhk.co/noxomosanena/njgxjbf/last_year_apple_event.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/bokelur/34519757633.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_off0000ba87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBA87 5168 bytes
SHA-256: 4679d5e6b53c54213ce2e734804fe43aaad17e64006f17cf951701a23643cfbe
font_01_sfnt_off0000cc2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC2A 10960 bytes
SHA-256: 66bd2b6fcbaa8b4b233344be6dbd69fb231b3538e43d0b5fdd16aafbd4fee88c