Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc1838538589a1c…

MALICIOUS

PDF

616.1 KB Created: 2022-03-06 01:20:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: b67801a2aefee5694b0669948c7c5f74 SHA-1: 5f3a8a1938fcdcc0940db1fd4ad1bc404d895cfb SHA-256: 1dc1838538589a1ccb698c553eb72b58d37ba1543b464c4383606c339e5598cf
136 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3872

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 https://wirut.co.za/XSRYdR1H?utm_term=guided+elk+hunts+in+texas PDF link annotation
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/16204700caa51f---ramavebidadona.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/7fee9025e9c61a3fd98183b06c769b8f/4418037529.pdfIn PDF document text
    • http://zabradli-znerezu.cz/userfiles/file/baxazisil.pdfIn PDF document text
    • http://bajkolandia-leszno.pl/userfiles/file/pejogipi.pdfIn PDF document text
    • http://callbells.com.ua/kcfinder/upload/files/pazotodaveduzapotakozireb.pdfIn PDF document text
    • https://marblo.marblobaths.ph/app/webroot/img/files/finovamimegolila.pdfIn PDF document text
    • http://sinkrontech.hu/admin/kcfinder/upload/files/82884224671.pdfIn PDF document text
    • https://kiofruits.com/admin/uploads/files/jobeleliwisivul.pdfIn PDF document text
    • http://tlkingatlan.hu/kepek/other/file/18194139909.pdfIn PDF document text
    • http://getawaynewzealand.co.nz/wp-content/plugins/formcraft/file-upload/server/content/files/16223dfe807094---bitasaxerakemalivirik.pdfIn PDF document text
    • http://agenturamotivace.cz/uploadfiles/file/13725478614.pdfIn PDF document text
    • http://chokmanee.com/userfiles/file/kojozoxodunadofematibageg.pdfIn PDF document text
    • https://ahreco.com/uploads/news_file/27201367159.pdfIn PDF document text
    • http://geomanteia.com/userfiles/files/4089651092.pdfIn PDF document text
    • http://myxroad.com/upload/userfiles/file///tawuvid.pdfIn PDF document text
    • https://congtydaihai.com/upload/files/datixepekezifuwafariga.pdfIn PDF document text
    • https://intimtreningdebrecen.hu/frontend/ck/kcfinder/upload/files/22998191577.pdfIn PDF document text
    • http://fjsxsx558.com/upload/files/xuzidagugadovawex.pdfIn PDF document text
    • http://rbn.org.np/public/admin/plugin/kcfinder/upload/files/vipumifexinimowalubure.pdfIn PDF document text
    • http://veszpremkosar.hu/_user/file/99775839039.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f9b978c70bb---87559416002.pdfIn PDF document text
    • https://ncsccalgary.com/userfiles/files/22680207724.pdfIn PDF document text
    • https://pecel-piok.hu/images/files/76281188859.pdfIn PDF document text
    • https://darkoyunpin.com/calisma2/files/uploads/vuzisoduwoviza.pdfIn PDF document text
    • http://snc.easy-event.net/img/uploads/files/lusesoxagubile.pdfIn PDF document text
    • https://pmb.unimal.ac.id/assets/plugin/kcfinder/upload/files/jagunetumajuviz.pdfIn PDF document text
    • https://birotex.rs/images/files/53452451002.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_off00093626.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93626 17056 bytes
SHA-256: fc1536c8dc41ccb5ad3d5055e2cfa7ec5aa60009a8c14294335a28b269949086
font_01_sfnt_off000962db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x962DB 10456 bytes
SHA-256: 5b38fa986202dae304ebf2d34f93f00c1e34c4471ccadfc962bc969d45f7766c
font_02_sfnt_off00097a93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97A93 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9