Malicious PDF — malware analysis report

Static analysis result for SHA-256 445b23daf5a7af2a…

MALICIOUS

PDF

86.2 KB Created: 2021-06-27 22:00:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-10
MD5: 8a5eca09b259f0fabdd34c803c0837be SHA-1: 869ad0c89bd3abb62e8521d024b1b384e195fee3 SHA-256: 445b23daf5a7af2a7bf68b10e939a25e3a51a47f7b7eeade11f045a762d002c2
96 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 5

  • 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://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093ca498d3f8---furodenewusudalikagaxeto.pdf In PDF document text
    • https://www.synergyheart2heart.team/wp-content/plugins/super-forms/uploads/php/files/uqu79li5urv9u3rqef08bkoreu/zifimudofokelodokabobazig.pdfIn PDF document text
    • http://oresteruggiero.com/userfiles/files/97165473193.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5335739ce0---33837276334.pdfIn PDF document text
    • https://drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8a38c97d1---jelazogaki.pdfIn PDF document text
    • https://travelselection.us/wp-content/plugins/formcraft/file-upload/server/content/files/160c0c626d314d---77830600064.pdfIn PDF document text
    • http://armanetti.com/images/bozevoxufene.pdfIn PDF document text
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/7da2a979d9bfa30b8fc7730d7db91515/66226085260.pdfIn PDF document text
    • http://ventilyatsia-v-sochi.ru/ckfinder/userfiles/files/firadaxizu.pdfIn PDF document text
    • http://tokstar.com/_UploadFile/Images/file/56870681742.pdfIn PDF document text
    • http://www.aadhar-interior.com/userfiles/file/96389605482.pdfIn PDF document text
    • http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/16075ee6940872---48631509891.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/302e2224a8f10b78116376f6def255e5/wigefurel.pdfIn PDF document text
    • http://afgventuregroup.com/cfiles/file/27670652393.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160775afd07313---tawupijaguwet.pdfIn PDF document text
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160850da7569d1---jovidu.pdfIn PDF document text
    • http://comp-art.ru/userfiles/file/punegalixopaxiw.pdfIn PDF document text
    • https://susta.vn/userfiles/file/82585241843.pdfIn PDF document text
    • https://winston-woodward.com/wp-content/plugins/super-forms/uploads/php/files/945bab800c2042ba8659fac67ce2163e/vusuzumipopasiwuduz.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/f4edfc71585a69df63f21b395e2a815d/57860467871.pdfIn PDF document text
    • http://nfrostov.ru/upload/files/vajatazuxowu.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ec5dbd686f---76094931499.pdfIn PDF document text
    • https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/49891477efe96c0b5c6beda9c6638325/pabob.pdfIn PDF document text
    • http://bhk-aindling.com/userfiles/files/5311180456.pdfIn PDF document text
    • https://bouveau-consulting.com/userfiles/file/53456673153.pdfIn PDF document text
    • http://pvsystexperts.com/wp-content/plugins/super-forms/uploads/php/files/tm2077rs2p8t23sqh8p5jmviu2/3841681696.pdfIn PDF document text
    • https://zweefvlieg.net/userfiles/file/nuvikatofoda.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=one+eye+itchy+and+wateryPDF 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_off0000ef2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2C 10360 bytes
SHA-256: 03bb9d266160a596d10f9247595d823c56eb70305cd7ecab4621f7ff6f88077a
font_01_sfnt_off000106a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106A1 17172 bytes
SHA-256: 8639c85fb8a69e1516d40d7cff58acfb1363249d78ccaba3a19732b288754349
font_02_sfnt_off00013368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13368 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1