Malicious PDF — malware analysis report

Static analysis result for SHA-256 c53f3c6e6537ddcc…

MALICIOUS

PDF

70.1 KB Created: 2021-03-03 02:10:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 29c82f139a65cc600ed37fc5155898d0 SHA-1: ea9fca95d1cea968652ec0ac1248a28c831bfa88 SHA-256: c53f3c6e6537ddccfbdd4d0bd6ab9d6bd735e6c282388cdfb1d02f3096ecb5ae
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://kuzutuzo.ru/wb?keyword=que%20hace%20la%20psicologia%20juridica PDF link annotation
    • https://cdn.sqhk.co/wemupaxuziv/jhcFgia/kea_coloring_book_online_free.pdfIn PDF document text
    • https://cdn.sqhk.co/gituxogud/8Yghxjj/contour_plus_meter_kit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486213/normal_6015b608bfb01.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451561/normal_60223b0d426fb.pdfIn PDF document text
    • https://cdn.sqhk.co/bodevoposuji/iYVhcKp/nostalgia_electrics_popcorn_maker_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/jeviseme/jhnjxUW/cat_simulator_codes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jimomurapujivo.onlinewebshop.net/why_is_lean_management_important.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/adventhealth_email_format.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/gavaxizape.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/rudamizuwesonanujaxov.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/christopher_cross_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/kukitofeboxepivisevobep.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/rajuvimufurekuti.pdfIn PDF document text
    • http://geforagegi.atwebpages.com/dirt_devil_handheld_carpet_cleaner.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/pewele.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_off0000d3bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3BD 5472 bytes
SHA-256: 15a451c4ac061135ae48acfbf3c1cb0391eb9231d5ddfcb507c8592a85a015fb
font_01_sfnt_off0000e64d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64D 10960 bytes
SHA-256: 230669273db0189a654a22970586366446d54c6a733e425de56e071e193324d5