Malicious PDF — malware analysis report

Static analysis result for SHA-256 98bd000a84912ab7…

MALICIOUS

PDF

69.6 KB Created: 2021-02-25 04:08:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 44ed47e407eae8efb82703aacb0ec54b SHA-1: 70c7effdaca057da58d92d49b8d9171591cd4756 SHA-256: 98bd000a84912ab724805ae8479742f95901ee2bb1281437faf3bc0c8d1af0d1
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 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.
  • 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=guitar+songbook+tabs+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4470391/normal_600e75b05af2e.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/96476427168.pdfIn PDF document text
    • http://zizowifajazabor.22web.org/how_to_reset_service_engine_soon_light_bmw_325i.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417413/normal_60070c387c014.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475389/normal_5fc68389c2a34.pdfIn PDF document text
    • http://zopetiwan.22web.org/70522706794.pdfIn PDF document text
    • http://vazawujuzu.sportsontheweb.net/honda_eu2000i_carburetor_bowl_gasket.pdfIn PDF document text
    • http://pusikoxelumide.iblogger.org/57086237228.pdfIn PDF document text
    • http://jedomagisuw.getenjoyment.net/fatazirifelutagek.pdfIn PDF document text
    • http://fepemewavitik.66ghz.com/wallpaper_iphone_xs_max_full_hd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tejademadubo.rf.gd/general_anaesthesia_surgical_procedure.pdfIn PDF document text
    • https://s3.amazonaws.com/dazinibonofobi/carrie_underwood_southbound_live_performance.pdfIn PDF document text
    • http://wamilexujiweni.epizy.com/why_does_my_samsung_s5_battery_drain_so_quickly.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/90429894933.pdfIn PDF document text
    • https://s3.amazonaws.com/remavuj/free_division_worksheets_for_year_2.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/bug_report_apple_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/descargar_shazam_apkpure.pdfIn PDF document text
    • http://sutijipekopavob.rf.gd/88366003554.pdfIn PDF document text
    • http://furofazitogo.epizy.com/sedef.pdfIn PDF document text
    • https://s3.amazonaws.com/sasufufa/89934292959.pdfIn PDF document text
    • http://geforagegi.atwebpages.com/dirt_devil_handheld_carpet_cleaner.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_off0000d1d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1D4 5412 bytes
SHA-256: 5c470926467fcfaa4643644959e19e0b10d8e258c9762788d3d1fded7ce03b7f
font_01_sfnt_off0000e44f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44F 10356 bytes
SHA-256: e0dd4421bb3f4e944c42467a2531430e07217d9429df262f2fa00dcb6a91856c