Malicious PDF — malware analysis report

Static analysis result for SHA-256 a59adb043426a2dd…

MALICIOUS

PDF

81.1 KB Created: 2021-03-02 17:11:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f5ac2a6ac5fd3edd1e255bbb44a6f476 SHA-1: b4cef662d13d13be65a2baa6ce98f096300d11ee SHA-256: a59adb043426a2ddcc8251a8295d0964187dee00562e863a5468570e275fba87
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://pelibifir.ru/123?utm_term=the+secret+life+of+walter+mitty+original+1947+full+movie PDF link annotation
    • https://cdn.sqhk.co/felodunom/hcWvedj/milwaukee_6_tool_combo_kit_home_depot.pdfIn PDF document text
    • http://winwites.space/troy_bilt_42_mower_deck_belt_replacement9i5h7.pdfIn PDF document text
    • https://cdn.sqhk.co/vojofarakiva/jjw9hfO/46183438871.pdfIn PDF document text
    • http://vaxiliwu.medianewsonline.com/how_to_put_together_graco_simple_sway_swing.pdfIn PDF document text
    • http://sozaxesugoj.mywebcommunity.org/pasimifoxidep.pdfIn PDF document text
    • https://cdn.sqhk.co/sebetite/XI9geCQ/12416489523.pdfIn PDF document text
    • http://fasekafalig.scienceontheweb.net/65669901132.pdfIn PDF document text
    • http://vinograd.io/85535542935v3cqt.pdfIn PDF document text
    • http://lamaded.mywebcommunity.org/lodabozoxizuwula.pdfIn PDF document text
    • https://cdn.sqhk.co/xugumewaz/UibhcEM/victory_day_russia_2020_time.pdfIn PDF document text
    • https://cdn.sqhk.co/jimevexir/jjhihhc/hoop_mountain_basketball_shooting_challenge_2020.pdfIn PDF document text
    • http://wemuwetafivaxe.sportsontheweb.net/tifarenanumawirileni.pdfIn PDF document text
    • https://cdn.sqhk.co/lokiwejawe/dheahbR/large_ant_colony_for_sale_uk.pdfIn PDF document text
    • https://judexesadizit.weebly.com/uploads/1/3/0/7/130738912/2619672.pdfIn PDF document text
    • https://cdn.sqhk.co/gexedamej/diejPgg/pixel_car_racer_mod_apk_unlimited.pdfIn PDF document text
    • https://cdn.sqhk.co/gapekozuwa/s6jdYhb/9376488437.pdfIn PDF document text
    • http://gexomafe.mypressonline.com/how_to_check_refrigerator_temperature_control_thermostat.pdfIn PDF document text
    • http://springtea.space/anatomia_musculos_de_la_caraj7out.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000fc32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC32 5876 bytes
SHA-256: d8b8a3a0575001438336cf4115357f266acb8bfb18c8f418df010ea8293301de
font_01_sfnt_off00011033.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11033 11724 bytes
SHA-256: b0b4ab42c9ab00bd774646012fdc81bf60baf923cb237e226455a81156038a00

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