Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa889b79b41371df…

MALICIOUS

PDF

83.6 KB Created: 2021-08-02 18:49:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 991257826f3e58c6c24e176deb9e4085 SHA-1: 95b942cdf9256fef3110d7a26452e09bb5b786b4 SHA-256: aa889b79b41371df51a97d56f4c78fef7b5c03ef22249753ba3b44671b8d1702
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://karinameal.ru/imgdish/files/fomokoxotezasaj.pdf In PDF document text
    • https://ckmusicdesign.nl/userfiles/file/jetuxifonogatad.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160792d718f0de---zimibunogelibemisexad.pdfIn PDF document text
    • http://parkergeneralcontractors.net/userfiles/file/ladutirol.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607008ee72e47---vurix.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/33991711826.pdfIn PDF document text
    • http://zkojicin.cz/userfiles/file/20121971440.pdfIn PDF document text
    • https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/62a4f3d301ecf67b5ace96e11bdb11ce/zavesudivezeniwibavosa.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160939e0d14d15---38165678335.pdfIn PDF document text
    • https://sarujiovalente.com/wp-content/plugins/super-forms/uploads/php/files/j0r6ufkfelgppjc14vg8ltht7u/77709959991.pdfIn PDF document text
    • http://argol-editions.fr/userfiles/file/14356926252.pdfIn PDF document text
    • http://lapenya.cat/imgjovesnaves/file/12278203366.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/a87ua61o8mg70rhlcahi7uhel0/49481446339.pdfIn PDF document text
    • https://aquatim.ro/uploads/files/69677475748.pdfIn PDF document text
    • https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/p3jq96qjm80h20d70ljti48m97/19049642277.pdfIn PDF document text
    • http://thediamangroup.com/_images/files/xejezoremidaduzupipevu.pdfIn PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c4ec596b6a8---94045244817.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b652312152d---2289670272.pdfIn PDF document text
    • https://thepainter.asia/upload/files/samopazujoxetavatemuj.pdfIn PDF document text
    • http://www.loicadesacavem.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16081a9d80474d---50653689659.pdfIn PDF document text
    • http://rallyteamwalraven.nl/file/zafunob.pdfIn PDF document text
    • http://sushibelovo.ru/files/kefupotizerijun.pdfIn PDF document text
    • http://vswet.ru/f/lixitemuwuligekolidobagod.pdfIn PDF document text
    • http://banglenhospital.com/UserFiles/File/texabiwufegujudig.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=download+car+parking+multiplayer+mod+apk+4.5.5PDF link annotation
    • 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_off0000df4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF4B 11360 bytes
SHA-256: 1d76ca9535e536625c0eeade6363218e899b1c8cec35e4569c3640282fb7bd77
font_01_sfnt_off0000f9fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9FA 17688 bytes
SHA-256: df69f00a02af26534c3c53b35ff0d9641f67b9bbf518ea8e568ee124be20f897
font_02_sfnt_off0001285c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1285C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1