Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fcd518621b70a89…

MALICIOUS

PDF

72.3 KB Created: 2021-02-25 10:15:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cf2f2e3041c46645a29209c01a1fc894 SHA-1: fea058d9e287eae6d5a27c6857479bff465a6c32 SHA-256: 5fcd518621b70a89c762fb7d24d35a02fed2649ebb189d749a73ce7fbd4f71b4
196 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.
  • 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://seumenha.ru/award?keyword=exercises+with+resistance+band+for+bum PDF link annotation
    • https://batuginuvitewaw.weebly.com/uploads/1/3/4/0/134013132/rigifimemes.pdfIn PDF document text
    • https://cdn.sqhk.co/naziwixolagu/X0Sgf8r/juzizunuwazepozilikegok.pdfIn PDF document text
    • http://reactivascotia2020.com/new_fruit_pop_bubble_shooter_mod_apkgdnn2.pdfIn PDF document text
    • https://cdn.sqhk.co/febutatesu/Sgejhii/ridusan.pdfIn PDF document text
    • https://cdn.sqhk.co/negapevu/jdgdv2s/super_discount_liquor_dixie_inn.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwifoviwalo/5gdhchg/neon_drive_switch_test.pdfIn PDF document text
    • https://cdn.sqhk.co/dedogupazib/hcgfVV2/lexijupetedodabipo.pdfIn PDF document text
    • https://cdn.sqhk.co/lamiwifa/1gfHcib/scooby_doo_iphone_wallpaper_hd.pdfIn PDF document text
    • https://cdn.sqhk.co/wosipuvetot/gfkgexw/32892946559.pdfIn PDF document text
    • http://opencabinets.xyz/39083696768gsxu6.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/gumagabu/97686425388.pdfIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/aia_insurance_brand_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/nerd_glasses_vector_free.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/zegijaxesosugevalevef.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/aircraft_maintenance_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wazotojemov/5478904046.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/bakery_shop_business_game_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_off0000dd26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD26 5484 bytes
SHA-256: e04264d8382af50504c96433be517464626390bed49c79c824196dd48f0af336
font_01_sfnt_off0000efbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBE 10668 bytes
SHA-256: 3eca09d91148fbcc13eb6f00157c6c3cf944a391a18ac7e1de735818f710be50

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