Malicious PDF — malware analysis report

Static analysis result for SHA-256 f879befc93193c84…

MALICIOUS

PDF

86.7 KB Created: 2021-07-05 12:50:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: 3765492239b26c7956a1947bf011a704 SHA-1: d2960e0b5fb05a10b686340f2ed0532d0387a392 SHA-256: f879befc93193c84281d750a669038018cdadd5749fdc0caaa65e042d290691a
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094bd8804d96---37935091253.pdf In PDF document text
    • https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/68647b308fdecb685654ded4f3d91fec/zikuzemijasibiditelot.pdfIn PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/caim56ki846n6r9bvr7v35to70/85315366099.pdfIn PDF document text
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/509c70af451552ed4baefd56bfc4a352/vobirakuviwefuror.pdfIn PDF document text
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/f7f534a54efb6365b1b89f1995bdbff5/30931482221.pdfIn PDF document text
    • http://thechitay.com/uploads/userfiles/file/1958917974.pdfIn PDF document text
    • http://esenkardeslerinsaat.com/resimlerfiles/tabunetejiginuzew.pdfIn PDF document text
    • http://dohertylaw.net/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/97101265417.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609a3e078609e---sixefiseweropuwekunilu.pdfIn PDF document text
    • http://www.assignproject.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609455fe16ce2---nasukekilugeridanibonovaj.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607a68c192d0c---40653709495.pdfIn PDF document text
    • https://angkorphotographyguide.com/userfiles/file/98500647877.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160796f408b4f2---8752204206.pdfIn PDF document text
    • https://livingcircles.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1607def881fef7---49316053430.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/31531448424.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/16074ca59ef1b2---kodederukokuzuxagazevun.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160c95b73da9a1---13772578794.pdfIn PDF document text
    • https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c4d19ebd98f---20675691431.pdfIn PDF document text
    • http://3xlove.com/uploadfile/file/1036875243.pdfIn PDF document text
    • http://clinivetmadonnadirosa.eu/userfiles/files/70926180428.pdfIn PDF document text
    • http://counterreaction.net/wp-content/plugins/formcraft/file-upload/server/content/files/160804f61ce18d---37399474495.pdfIn PDF document text
    • http://lacasedescaraibes.fr/file/borovinizapawekolurinu.pdfIn PDF document text
    • https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/ea99baf9178d7382fd94d83b685a16d9/95774774103.pdfIn PDF document text
    • http://www.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/160cd2d6754d6e---99603196026.pdfIn PDF document text
    • http://mygotour.com/FileData/ckfinder/files/20210617_CFEA564DB93B30D6.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=digital+information+systems+examplesPDF 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_off0000eda9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000105bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105BB 17808 bytes
SHA-256: deb8ac85ba758863850763cf044741e238faf9ed02bdba9ce0d0a459209f38d4
font_02_sfnt_off000133e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133E5 10920 bytes
SHA-256: 574792f9048b02228e4432583f63d308b66592b7b925abb95d1454afebb2f4cd