Malicious PDF — malware analysis report

Static analysis result for SHA-256 25809afb0ff16414…

MALICIOUS

PDF

398.8 KB Created: 2021-08-22 18:42:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: 8c3f625990cd3062100d999ad7fe360b SHA-1: b81b5ad8ac9e5366df5f4029c7b6226d9ac108dd SHA-256: 25809afb0ff16414b73af532f8195ec5aef32d2263b22282736c7ec240b9eefa
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8117

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://thegibbsfamilyreunion.com/clients/d/d9/d929505c7faf6263097cc97620c39d65/File/pawanelunerupam.pdf In PDF document text
    • https://mikepromedia.com/wp-content/plugins/super-forms/uploads/php/files/m1tov50bl6mno3daha981lnpu6/74221244346.pdfIn PDF document text
    • http://www.ecvbrass.ch/user/web/file/21991470734.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160971fa877834---75204980433.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160894df78a8fb---57667968356.pdfIn PDF document text
    • http://blossomtour.net/FileData/ckfinder/files/20210722_F8A44D620F1D9E9B.pdfIn PDF document text
    • http://pension-erlkoenig.de/img/editor/file/lalifupemepuxamitukebimam.pdfIn PDF document text
    • http://kids-ex.com/teresadevi.pdfIn PDF document text
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607074e7d7f7b---31308489978.pdfIn PDF document text
    • http://www.irrv.org/uploads/files/96379028357.pdfIn PDF document text
    • http://france-ex.com/images/blog//file/10999116186.pdfIn PDF document text
    • https://primewestelectrical.com/wp-content/plugins/super-forms/uploads/php/files/dfd19a57217f54f4efe7f5a33c9e7f71/xilikenofuledujikufula.pdfIn PDF document text
    • https://colakcivi.com/userfiles/file/26974485379.pdfIn PDF document text
    • http://kartywspomnien.pl/uploads/assets/file/51174934600.pdfIn PDF document text
    • https://vegan-eshop.cz/data/file/milowebekilasaruwanizo.pdfIn PDF document text
    • http://ats-dz.com/userfiles/file/tipijukolopade.pdfIn PDF document text
    • http://zap-interactive.com/uploads/files/89654573847.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/38462608796.pdfIn PDF document text
    • https://lawyerupsmart.com/tempimg/file/wibunisasesufozidofev.pdfIn PDF document text
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/015dc79084605343647e48d69587d1d5/kafezipevilazub.pdfIn PDF document text
    • https://www.hamburgeriaagricola.com/wp-content/plugins/super-forms/uploads/php/files/hi1vfgv0154cbstkorj2hh9d86/kigazuzadajamadirofe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=potato+osmosis+experiment+results+quizletPDF 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 extracted file (font_00_sfnt_off0005b039.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005b039.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b039.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B039 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0005c857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C857 18328 bytes
SHA-256: 6afe725a0be4337395c2181adb2093e82451cdf61e8cb71e28204aa499a0f522
font_02_sfnt_off0005f925.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F925 10824 bytes
SHA-256: 5f0d941e76d4fc4620f666ff86ad4bcd55f4a05484874ba5f720504862b8b981
font_03_sfnt_off0006122e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6122E 16324 bytes
SHA-256: 4a1e3041f8103a7d4e2e75db273aef650521616ab0c63d2aa14cc79fae449a56