Malicious PDF — malware analysis report

Static analysis result for SHA-256 808f48d921ea5eb5…

MALICIOUS

PDF

64.9 KB Created: 2021-02-14 03:26:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 27f9741ea760face9df423f8675d1853 SHA-1: 808e461efc59c2f4f8e889432da00e616a05908d SHA-256: 808f48d921ea5eb5730e2f5fa35afa0f84b2e1c2e6e125496a7634082237905d
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=nec+dterm+series+i+manual+pdf PDF link annotation
    • https://cdn.sqhk.co/losokifape/qzhhhbV/50621009961.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462345/normal_5fdcd56dc04b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420767/normal_5feea0cb9dad0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495839/normal_5fca2dd95d04d.pdfIn PDF document text
    • https://cdn.sqhk.co/mewidexe/RWD16qm/game_maker_s_toolkit_mark_brown.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370746/normal_5fc63aa89e7f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455884/normal_6006b10e6ee87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481834/normal_6011a77fe9644.pdfIn PDF document text
    • https://cdn.sqhk.co/dasisogi/iigjxgj/ball_hole_trainieren.pdfIn PDF document text
    • https://cdn.sqhk.co/livatunozasu/9vaRlHn/zazito.pdfIn PDF document text
    • https://cdn.sqhk.co/gujuvizaja/ififshf/27834812783.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460471/normal_5fd89ef992dbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428341/normal_601d832a2e29b.pdfIn PDF document text
    • https://cdn.sqhk.co/nebemina/Kd24ohf/party_city_locations_east_brunswick_nj.pdfIn PDF document text
    • https://cdn.sqhk.co/xetokive/aWkMnje/boy_games_for_free_online_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418764/normal_5fd85cad74b03.pdfIn PDF document text
    • https://cdn.sqhk.co/xinovupu/Nlich91/86754493299.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/pazerogasarinu/konozu.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_off0000c18e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC18E 5268 bytes
SHA-256: e495b306a5c4dbd63e8575912f9679ced0e5bd2577a1b006bba786043d710528
font_01_sfnt_off0000d365.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD365 10340 bytes
SHA-256: 310a6815ba1a35da8d5b8f27b6befad7745bce362d2cd2f6b3468754c9d4ecc9