Malicious PDF — malware analysis report

Static analysis result for SHA-256 af21ea1696189223…

MALICIOUS

PDF

93.0 KB Created: 2021-08-23 21:06:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: e3eea7c4f78363d182808124d6ca2e7a SHA-1: 3492a1db97ee4340917a15deeb248ad9c426dabb SHA-256: af21ea169618922393d884ab56962104849bfc0a72d99924fc56fd8abbcbea9c
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9897

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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://philabc.ru/uplcv?utm_term=learned+of+learnt PDF link annotation
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/160a10c3b17549---lamazumesanu.pdfIn PDF document text
    • http://cokhihoangvinh.com/uploads/userfiles/file/89764766489.pdfIn PDF document text
    • http://erex.hu/upload/file/54882029547.pdfIn PDF document text
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160a15aad3784a---61797881478.pdfIn PDF document text
    • https://zweefvlieg.net/userfiles/file/90280535915.pdfIn PDF document text
    • https://brod-plovdiv.com/images/zodawemekitud.pdfIn PDF document text
    • http://ricoconsultingattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/55850490812.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/dexokibafajaz.pdfIn PDF document text
    • http://mrspk.com/ckfinder/userfiles/files/68866184687.pdfIn PDF document text
    • http://anonelectronics.com/admin/fckeditor/editor/filemanager/connectors/php/upload_jpg/file/202107010853238624.pdfIn PDF document text
    • http://gmkms.net/upfile_editor/2021/files/32872416419.pdfIn PDF document text
    • http://robalton.es/Albums/images/file///90727692219.pdfIn PDF document text
    • http://pchs1967.com/clients/b/b3/b38b0c0be7ceca4b309dcb684d78a7c5/File/9303032343.pdfIn PDF document text
    • http://friulanapanini.com/images/file/duwikomilanogogekezuliw.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/1610d3a55bf16c---lenakuzejaxegagubir.pdfIn PDF document text
    • https://www.scanworld.se/wp-content/plugins/formcraft/file-upload/server/content/files/161190783b7192---dujupuwomosuneriwub.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/fvdv80n0krfj9hgj607ma92t9c/4464462767.pdfIn PDF document text
    • http://dermaktif.com/imgup/file/gadom.pdfIn PDF document text
    • https://tranduongauto.com/app/webroot/files/images/pages/files/mipixupifowelo.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608890a38a499---vimomalovoxudukunugus.pdfIn PDF document text
    • https://www.barrau-philippe-sedeco.fr/ckfinder/userfiles/files/dusor.pdfIn PDF document text
    • http://www.holderit.com/wp-content/plugins/formcraft/file-upload/server/content/files/16097b6f616da3---joxubigeriwifo.pdfIn PDF document text
    • http://cinebuzz.be/uploads/userfiles/files/39321943308.pdfIn PDF document text
    • http://xn--e1aazeoc7d.xn--p1ai/images/shared/file/49440282096.pdfIn PDF document text
    • http://gtshotel.it/images/file/duberufijuwukop.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0d852c61ce---77240129672.pdfIn PDF document text
    • http://endustriyelkiralama.com/wp-content/plugins/super-forms/uploads/php/files/uju2mrceh6ka6iob08pn6vqko4/84951652428.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_off000106b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011ece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11ECE 10044 bytes
SHA-256: af42c7020a88c753a47c7c777d043de4990885bed5e28a424a5b73ac810c2a38
font_02_sfnt_off00013535.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13535 18260 bytes
SHA-256: 9dc2c4add854a637ce59118459013b39aceda1db69bc2b7fd0b21b0a9a071d21