Malicious PDF — malware analysis report

Static analysis result for SHA-256 5521876ff548f8a9…

MALICIOUS

PDF

289.3 KB Created: 2022-01-12 12:47:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: db822be6553ee90202796bdccfb5bdda SHA-1: 7549a0943ec0c4ebaa1b69a93d97e8a0f14020ad SHA-256: 5521876ff548f8a9608c1e6dee62755884ef1e689a6b2322ace3dbb62ea58a71
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6557

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://sweatrinserepeat.com/ckfinder/userfiles/files/vanojejopelaziga.pdf In PDF document text
    • https://doellefjelde-mussemarked.dk/images/newsmail/file/73027573756.pdfIn PDF document text
    • https://decisionstogo.com/fck_image/file/53245432328.pdfIn PDF document text
    • https://foodsafebox.com/ckfinder/userfiles/files/75300081780.pdfIn PDF document text
    • http://euroambulans.pl/userfiles/file/podutar.pdfIn PDF document text
    • https://cebrigantina.com/025-CEB/images-editor/file/92667799726.pdfIn PDF document text
    • https://flying-vikings.net/UserFiles/file/92128969560.pdfIn PDF document text
    • https://www.sabiamente.es/wp-content/plugins/formcraft/file-upload/server/content/files/1619003a8c93f4---83439653527.pdfIn PDF document text
    • http://styrexon.cz/userfiles/file/29063541547.pdfIn PDF document text
    • http://xn--b1adadl3aoabascoo.xn--p1ai/upload/files/pililetoxaxedoruw.pdfIn PDF document text
    • http://bm-shower.com/userfiles/files/kazolusadu.pdfIn PDF document text
    • https://discovery99.com/userfiles/file/dipeb.pdfIn PDF document text
    • http://www-a.euro-ex.net/images/blog/file/lujetutoxejaxudida.pdfIn PDF document text
    • http://henzefashion.com/userfiles/file/sapuzekoxulagid.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/161709038c13a3---73039475856.pdfIn PDF document text
    • http://wasserentkalkung.at/ckfinder/userfiles/files/xemejewadusutomaluvo.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/73a05da090c69c49cec2bc6ad31bd5fb/bimevefosukewadumixulasu.pdfIn PDF document text
    • http://ridendo.cz/files/file/45072169614.pdfIn PDF document text
    • http://redemaisfarma.com/userfiles/file/numirumobiwefamudul.pdfIn PDF document text
    • http://livestreaming.group/wp-content/plugins/super-forms/uploads/php/files/cvrt60fa8as9c0g7c0k7m8dhe5fv7dv7/96409775311.pdfIn PDF document text
    • https://ph2020.org/ckfinder/userfiles/files/lilimipilisokejekona.pdfIn PDF document text
    • https://unibel.pl/pliki/upload/file/moziwizajiw.pdfIn PDF document text
    • http://asung-tech.net/userData/ebizro_board/file/59690954723.pdfIn PDF document text
    • http://watch62.ru/files/files/33225738702.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/cmwvf4RlXg4/uplcv?utm_term=dual+dc+motor+driver+20a+datasheetPDF 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_01_sfnt_off00040ba4.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_01_sfnt_off00040ba4.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003f685.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F685 6160 bytes
SHA-256: 59c8f63c287e29b2f83ca0bcf27d8b27539f8391b66d5225dd39e8d517404a90
font_01_sfnt_off00040ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x40BA4 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00042248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42248 10940 bytes
SHA-256: dcb65eea27981b76c81e54b1dac5daf7199ee97a95b99f7f586ad1c328585e50
font_03_sfnt_off00043bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43BB4 21856 bytes
SHA-256: 23606be992922eb1818b8f4c6f266f9042f312de70839b1f07d40059f30c7a4d