Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce46a6f737f898bd…

MALICIOUS

PDF

73.3 KB Created: 2021-02-25 23:20:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b88bef793562545ce080f2000fd14165 SHA-1: 13289f4747690a8a1fa1284e9b719358f24e7489 SHA-256: ce46a6f737f898bd61236a51370cec913c8fd502f2f4204cbeb92b4d5dbee20a
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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.
  • 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://crophysi.ru/award?keyword=hamilton+beach+flexbrew+repair+manual In PDF document text
    • http://bufo.online/20408568430ts17.pdfIn PDF document text
    • https://cdn.sqhk.co/dovoxukeni/ieqjiJI/democracy_4_download_igg.pdfIn PDF document text
    • http://loginwithfb.site/sopojoguxazivapsho67.pdfIn PDF document text
    • http://awpmode.com/800265139946gyuk.pdfIn PDF document text
    • http://static-start.top/83606721406px2yc.pdfIn PDF document text
    • https://cdn.sqhk.co/mojuzizimu/cETOhcz/hair_salon_makeover_and_dress_up_games.pdfIn PDF document text
    • https://cdn.sqhk.co/dawadetugas/gcgfij0/download_game_avion_flight_simulator_mod_apk.pdfIn PDF document text
    • http://krepezh.guru/telangana_election_report_videoqqquo.pdfIn PDF document text
    • https://cdn.sqhk.co/tebefaravuz/fJyheha/10081931462.pdfIn PDF document text
    • http://creamspait.xyz/59438069181j28jg.pdfIn PDF document text
    • http://healthit.space/iron_output_crossword_cluehsggg.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/dukexajuj/mopufog.pdfIn PDF document text
    • https://s3.amazonaws.com/xotomisen/hpu_icdeol_date_sheet_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/xupob.pdfIn PDF document text
    • https://s3.amazonaws.com/lovomijelun/joan_baez_albums_free.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_off0000e18b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18B 5336 bytes
SHA-256: 18df588c9172640b6712eaab8c70d58de587ae6485b6523c640882418009e7ee
font_01_sfnt_off0000f39c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF39C 10752 bytes
SHA-256: 538f86f914c2a6049c6eeed1906cabbe80ddca4573a1b6d0b62c82f4b856b54c