Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61fdc7f13816289…

MALICIOUS

PDF

243.2 KB Created: 2022-02-28 19:43:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: b9e591ffaa6e8446c1d8b470fbc3d142 SHA-1: 9753a99469dd71e95ff76b517fa228fd420af952 SHA-256: b61fdc7f1381628947e06af502ad7e583674c3a53a9f0737c910814b67b89be5
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7436

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
  • 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.
  • 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://topaslt.com/userfiles/file/72509728563.pdf In PDF document text
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161fe960f87693---22207360946.pdfIn PDF document text
    • https://mk-sito.it/uploads/file/jereburojuf.pdfIn PDF document text
    • http://korvet-sp.ru/userfiles/file/danog.pdfIn PDF document text
    • http://arcenevents.nl/site/upload/files/74882213550.pdfIn PDF document text
    • https://maciejabramowicz.pl/upload/files/file/zabipamamuri.pdfIn PDF document text
    • http://urbanconstructions.org/images/uploadedimages/file/3385468202.pdfIn PDF document text
    • http://knx-shop.ru/admin/ckfinder/userfiles/files/resugetumofibixovikujuz.pdfIn PDF document text
    • https://hideab.se/tc/Mediagalleri/file/levanenujilafeminumemas.pdfIn PDF document text
    • http://candientushinko.com/images/file/49048079012.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/i489uk0vltfa7s6qm19qar4799/gukoloz.pdfIn PDF document text
    • https://alwaysthesame.pt/site/upload/file/subovuvadukemadupi.pdfIn PDF document text
    • http://sinners-party.de/media/file/zonux.pdfIn PDF document text
    • https://sedefartphotography.com/resimler/files/72860907325.pdfIn PDF document text
    • http://bochkari1.ru/pic/file/zulevogexiziputop.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/38a3625eb36b64a6f6e5c4b0053d8a23/27096456995.pdfIn PDF document text
    • https://www.edaas.com.tr/admin/kcfinder/upload/files/kilimozulefexit.pdfIn PDF document text
    • https://ehilteknik.com/uploads/files/66488573083.pdfIn PDF document text
    • https://sokolzgierz.pl/web/uploads/files/rulinajoxunodof.pdfIn PDF document text
    • http://sz-frp.com/pic/20220208010349563.pdfIn PDF document text
    • https://123natura.com/stockages/files/23083374172.pdfIn PDF document text
    • http://realcomfort.ru/content/upload/file/32959746056.pdfIn PDF document text
    • http://www.yourhealthyourchoice.org/wp-content/plugins/formcraft/file-upload/server/content/files/162176fad75d18---jofusatosufe.pdfIn PDF document text
    • https://optimustelecoms.com/ckfinder/userfiles/files/vetara.pdfIn PDF document text
    • http://kodemari.info/data/files/gilikakowasuvaso.pdfIn PDF document text
    • http://busangh.com/attfile/fckimg/file///2022022005525_144143159.pdfIn PDF document text
    • http://domgr11.ru/uploads/files/85091597518.pdfIn PDF document text
    • https://ragaz.co.za/XSRYdR1H?utm_term=free+gumball+machine+templatePDF 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_off000361f2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000361f2.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000361f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x361F2 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00037912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37912 10748 bytes
SHA-256: f83493598c6dc9ee6c6b352b22a6278c485d3ce4765eb2bd4910034dd31f4fe8
font_02_sfnt_off0003914c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3914C 17360 bytes
SHA-256: 8db0c82fa43c4616a7e238964b255307b8dcb0e8a0b69cff89feb20cfd137839