Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa8a66843dd19b81…

MALICIOUS

PDF

73.4 KB Created: 2022-04-07 06:01:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-07
MD5: fe43f37c3a87b38d57f7810b2a636683 SHA-1: fc64e2cbb68226304418c04afd34e571b2a28021 SHA-256: aa8a66843dd19b81d834c1fa9e784cdc7deaaa933437262d5431febd0f12d100
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • 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://sunuf.co.za/YmrXLWy8?keyword=cisco%20ccna%20learning%20materials PDF link annotation
    • http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/162418b9bcf95a---12958333741.pdfIn PDF document text
    • https://jphotographyllc.com/userfiles/file/46932872210.pdfIn PDF document text
    • https://tunapvietnam.thietbiotoviet.com/Images_upload/files/97016652781.pdfIn PDF document text
    • https://balijijileg.weebly.com/uploads/1/3/4/5/134505585/1c7d4.pdfIn PDF document text
    • http://studioboscono.it/userfiles/files/26515852618.pdfIn PDF document text
    • http://donovaly-ubytovanie-safran.sk/web/userfiles/file/30936131922.pdfIn PDF document text
    • http://vaness-sens.fr/ckfinder/userfiles/files/76573063667.pdfIn PDF document text
    • http://vzwsportenmuziek.com/content_docs/25558720567.pdfIn PDF document text
    • http://king-tableware.com/uploads/files/202202170259289646.pdfIn PDF document text
    • http://iks.premoweb2.at/userfiles/file/4563044423.pdfIn PDF document text
    • https://pmms-online.com/assets/file/13590583128.pdfIn PDF document text
    • https://bc2000.order-pro.com/ckfinder/userfiles/files/34681501193.pdfIn PDF document text
    • https://taipeitccia.org/CKEdit/upload/files/81392024364.pdfIn PDF document text
    • https://zahidnawaz.com/UploadedImages/image/bapelat.pdfIn PDF document text
    • https://wefulurako.weebly.com/uploads/1/4/1/3/141350132/xufod.pdfIn PDF document text
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/1624afc64d4df0---61633083413.pdfIn PDF document text
    • https://vapevaka.weebly.com/uploads/1/3/1/4/131407737/80512.pdfIn PDF document text
    • http://rentaruedas.com/files/others/nezasijamojomufuwariw.pdfIn PDF document text
    • https://www.mediawerf.nl/bundles/store24backoffice/ckfinder/userfiles/files/sinosebekakexoxizugafe.pdfIn PDF document text
    • https://remurefovedelag.weebly.com/uploads/1/3/1/8/131860204/2534122.pdfIn PDF document text
    • http://instalacje-elektryczne.net/ckfinder/userfiles/files/vekijimowi.pdfIn PDF document text
    • https://lumixomenuvaw.weebly.com/uploads/1/3/4/7/134745504/25ac9.pdfIn PDF document text
    • http://struna.bg/admin/kcfinder/upload/files/27493355502.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC54 16872 bytes
SHA-256: 4c01db2683171a043eed13e77e3bed7510cf12f6e0bce4dd455ae473370ffb29
font_01_sfnt_off0000e846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE846 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001005d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1005D 10604 bytes
SHA-256: 030cd1fbbd82b755ea988344b25171fe533ba8e4c460e92019c613876f406d1d

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