Malicious PDF — malware analysis report

Static analysis result for SHA-256 22b858bc709daf81…

MALICIOUS

PDF

69.0 KB Created: 2021-02-19 00:57:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5a386fd72aefaf1f25dc553c62f21c67 SHA-1: 0ae5ab81cb40ec345850a75a157f7b5c6179bbe4 SHA-256: 22b858bc709daf8134cf45418607b72356c00574ca701d4c8fd6cf2ea733dcb1
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/123?utm_term=1996+polaris+sportsman+400+2+stroke+carburetor+adjustment PDF link annotation
    • https://cdn.sqhk.co/ketejeti/daEqDCG/38763883761.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365562/normal_5ff22d71d3b77.pdfIn PDF document text
    • https://cdn.sqhk.co/busibelifiv/jc0RL8j/79050490803.pdfIn PDF document text
    • https://cdn.sqhk.co/xinulezebi/qnihcgh/farmer._io_crazy_games.pdfIn PDF document text
    • https://cdn.sqhk.co/penuvipaw/Zia0heW/army_toys_town_gameplay.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368466/normal_5ff7fa2b97d8b.pdfIn PDF document text
    • https://cdn.sqhk.co/puvegipuros/kiiijyY/hockey_night_food_ideas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455370/normal_5fd9deda9709b.pdfIn PDF document text
    • https://cdn.sqhk.co/somisafeg/ggjfnjH/tutewuwimuga.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_602ee8ca287ef.pdfIn PDF document text
    • https://cdn.sqhk.co/dijowasedop/z7hf9ji/bein_sports_xtra_fanatiz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410207/normal_5ff3f45139e82.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/jobavo/zilejebamira.pdfIn PDF document text
    • https://s3.amazonaws.com/bubodeliza/81104104039.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/vomam.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/kotalajekolo.pdfIn PDF document text
    • https://s3.amazonaws.com/jawusawar/will_there_ever_be_a_mlb_game_for_xbox_one.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/majesew.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_off0000ce5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE5E 6128 bytes
SHA-256: 16376c4254aa17f8185317a985a88511ec328f0c7b55280b850aba77ae1c03c0
font_01_sfnt_off0000e31f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE31F 10448 bytes
SHA-256: ba3f6d7d6caecd5a284d5fd48276b740ccecdbb69ebcbbd5b26a3895a4969f81