Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f55b6a76e0e0b5…

MALICIOUS

PDF

374.8 KB Created: 2022-03-09 11:55:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-19
MD5: 247ed007b75b3ae91a29531c7fea4913 SHA-1: 8e74be8c0d516fd44895c62bcf6f388a81fe5ffa SHA-256: 26f55b6a76e0e0b591892d72f926b665483e8bbbd3de1511b2f84b51c9930a9e
246 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5513

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://lazav.co.za/XSRYdR1H?utm_term=free+a+cappella+sheet+music PDF link annotation
    • http://www.bufolari.com/public/immagini/file/12970693726.pdfIn PDF document text
    • http://acmemask.com/upfiles/editor/files/8203987051.pdfIn PDF document text
    • http://prograsifkalip.com/files/wipekegedokowubilub.pdfIn PDF document text
    • http://thicongdiennuocmiennam.com/uploads/files/komafobew.pdfIn PDF document text
    • https://businesslife.com/content/files/lorijomilanogidoximizateg.pdfIn PDF document text
    • http://pol2-simf.ru/userfiles/file/14526720148.pdfIn PDF document text
    • https://cowichanseniors.ca/userfiles/file/mapibekon.pdfIn PDF document text
    • https://bookings.gulfstarsports.com/admin/kcfinder/upload/files/pawowu.pdfIn PDF document text
    • https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/309fe9791108e38d921eaa51e4f70ea5/95064688541.pdfIn PDF document text
    • http://radio-salsa.com/php/rs/filesupload/file/wulifozonuwumonovixi.pdfIn PDF document text
    • https://wonwon.taipei/photo/file/93416214335.pdfIn PDF document text
    • https://5ky13lu3-1251.com/contents/files/zunuzizodurufepadi.pdfIn PDF document text
    • http://quantri.thaisonpalacehotel.com/upload/files/kugepaf.pdfIn PDF document text
    • https://rosanaalvarracin.com/userfiles/file/57928211342.pdfIn PDF document text
    • http://greenlasthousing.com/admin/kcfinder/upload/files/porazawa.pdfIn PDF document text
    • https://gkscam.com/userfiles/file/83265797781.pdfIn PDF document text
    • http://nahar-bd.com/assets/ckeditor/kcfinder/upload/files/fuximoxibonudukonofezago.pdfIn PDF document text
    • http://reliancefla.com/admin/images/file/fosaj.pdfIn PDF document text
    • http://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1620cbf8bbdc01---38396676006.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/i0b9f9qbmilk5fbji5o5shegv7/21221958471.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/16219198c7c68f---45285083242.pdfIn PDF document text
    • https://psicologopsicoterapeutaemdrtorino.it/uploads/file/29742152260.pdfIn PDF document text
    • http://kipia-nn.ru/userfiles/file/dotog.pdfIn PDF document text
    • http://suachuadienlanhhoaphat.com/hinhanh_fckeditor/file/8933112278.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16226830c40e68---76366093799.pdfIn PDF document text
    • https://korankertas.com/contents/files/81731685726.pdfIn PDF document text
    • http://interiorconsignments.com/media/file/petaxad.pdfIn PDF document text
    • http://mousike.it/img_ins/files/sesopamadofel.pdfIn PDF document text
    • http://elitk.ru/_files/jopasewegexifulusafaw.pdfIn PDF document text
    • https://gemicilojistik.com/userfiles/upload/file/57343678567.pdfIn PDF document text
    • http://greffe-cheveux-tunisie.fr/ckeditor/kcfinder/upload/files/29285698402.pdfIn PDF document text
    • https://safecampus.in/cmsCart/upload/file/38714631280.pdfIn PDF document text
    • http://vivaibonomo.it/userfiles/files/49054862880.pdfIn PDF document text
    • http://noithattamphuong.com/upload/files/feradujapilurube.pdfIn PDF document text
    • https://worldpigment.com/image/upload/File/farowijexatomuzamojetov.pdfIn PDF document text
    • http://stroyvodservice.ru/upload/File/66900809088.pdfIn PDF document text
    • https://wildpflanzen-planung.de/file/31364994558.pdfIn PDF document text
    • http://wflyyxzrgs.com/uploadfile/file/c93642a2432895b3913e859989ab156b.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 extracted file (font_00_sfnt_off000567fb.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000567fb.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000567fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x567FB 20324 bytes
SHA-256: 2f4d8441199063960fbd63649fc5e6e3b05450de943d6a891aaa0ff3eb2b9cfe
font_01_sfnt_off00059c55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59C55 10492 bytes
SHA-256: 7f413a7d962eb4fe4da61a40199d82575075c66f5e8c7f1ee7c472e8d6c397a5
font_02_sfnt_off0005b424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B424 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9