Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9ce2beb3f16cf7c…

MALICIOUS

PDF

73.3 KB Created: 2021-02-25 05:02:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 73aa07c763ce8702f985d9502e59b7bb SHA-1: f1f7176cf7652453cdb3909885e5e36525c7b5e2 SHA-256: b9ce2beb3f16cf7c74d8bf16fd88cf7da4fd44ea330c1e4b809cc414bf7bed33
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=munchkin%20board%20game%20tips PDF link annotation
    • https://cdn.sqhk.co/moxinivo/p91ia3D/truck_racer_game_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/tazifawixax/5Cq6tja/tumotuzalanovuvenapeno.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487905/normal_5fe77754d3779.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490001/normal_60044f09ab937.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377663/normal_5fde4d25d3237.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389582/normal_5ffe8c3ea0e17.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386091/normal_6005907c4b0fb.pdfIn PDF document text
    • https://cdn.sqhk.co/kewudomavave/hgfm6hg/tipefaxomipewananajowelej.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464311/normal_5ff827682de92.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386613/normal_6026a1517278a.pdfIn PDF document text
    • https://cdn.sqhk.co/novupezezis/fSheih4/brimonidine_tartrate_ophthalmic_solution._2.pdfIn PDF document text
    • https://cdn.sqhk.co/fofotixoz/QjeSgiu/spirit_saga_eggplant_escapade.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/teximikamukubo/guperu.pdfIn PDF document text
    • https://s3.amazonaws.com/pivetuzadujo/59661231954.pdfIn PDF document text
    • https://s3.amazonaws.com/jemazejodep/one_piece_nautical_king_battle_apk.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_off0000e052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE052 5664 bytes
SHA-256: 2aa7e346cd7cc990a1e8ecdab47facff6161088a2b90eead1b120aa9ddf462d9
font_01_sfnt_off0000f371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF371 10916 bytes
SHA-256: c9eea8b9eae8d656c089d953e4aef0ec8f7f2e24f3018467af972278ff9099ec