Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2f4da717b2efbfa…

MALICIOUS

PDF

82.5 KB Created: 2021-08-21 14:00:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-13
MD5: 1003b30181e94e07260716c61bee3054 SHA-1: 31c8f1fc0b0468b5bca0b1a31eec047cab388a0c SHA-256: f2f4da717b2efbfa4ace98fc5940099d526e5f90c16f64a8ef791f8eb1fce283
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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 https://archism.ru/uplcv?utm_term=five+nights+at+freddy%27s+golden+freddy+plush PDF link annotation
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/c529158759827c3412b9ac94855fa98a/pifezoz.pdfIn PDF document text
    • https://hotel-la-licorne.fr/userfiles/file/3977963233.pdfIn PDF document text
    • http://chaitraglaze.com/uploads/20867278724.pdfIn PDF document text
    • https://zabulgaria.org/userfiles/file/7154350225.pdfIn PDF document text
    • http://dagmar-e.de/userfiles/file/15499005940.pdfIn PDF document text
    • http://www.greddy.com/admin/common/ckfinder/userfiles/File/xegiliramomujepibupu.pdfIn PDF document text
    • https://pfhotel.gr/ckfinder/userfiles/files/27811188280.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/kuxufotukexedokotafetub.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a411c2979c8---17773466045.pdfIn PDF document text
    • http://cravaluos.com/ckfinder/userfiles/files/9747383519.pdfIn PDF document text
    • http://geriatriccarenewjersey.com/userfiles/files/37410161520.pdfIn PDF document text
    • https://widerbet.pl/userfiles/file/40114849449.pdfIn PDF document text
    • http://ascensionchina.com/userfiles/file/xutuberalumorezilefike.pdfIn PDF document text
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1607ca89506c0f---jowutumi.pdfIn PDF document text
    • https://www.kiteschule-kiel.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c52971e9b50---95352288312.pdfIn PDF document text
    • http://cobansut.com/userfiles/file/81814137080.pdfIn PDF document text
    • https://dehayemek.net/upload/ckfinder/files/riberugujemegiwipavi.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/343sn1t07h8q447o9lp8r1r7lq/14981279175.pdfIn PDF document text
    • http://brooklinehs1964.com/clients/6/6a/6a3559cec3eb17f551da2d864c8c85ab/File/botesoxivevewolofiteze.pdfIn PDF document text
    • http://szalkasszorutacskok.hu/app/webroot/files/content/files/jifejilibasofozudixal.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/160713dd7b1247---wokoxofuregapimukonerizi.pdfIn PDF document text
    • http://lu67.com/clients/50962/File/89101388088.pdfIn PDF document text
    • http://uticachemical.com/files/upload/files/bupuzuzo.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/8279b1941fec906174900184c951a4b9/gopotabokopir.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aad7fb44e6c---70550512400.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_off0000db77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB77 17920 bytes
SHA-256: 89b804dfdd527c5b6480b9e7a2eefd36f0055fc8d8b9e39e2971462494c5fe06
font_01_sfnt_off00010972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10972 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12189 11068 bytes
SHA-256: 85b80fc48fc1a5b104bf9de794eea299dc847807c4953dc73c89f9becf9b3dc9