Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d928ed5aa917a6…

MALICIOUS

PDF

82.1 KB Created: 2021-10-19 07:02:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-27
MD5: 512a945585c7856480097be12ae9b139 SHA-1: 55796456dfae7cf5234c2c84741a0e2aeb297c39 SHA-256: c5d928ed5aa917a6d7c0084e3335474df86bf8afd0f2f584a4fc14e8579be3e9
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.lsv-wittlage.de/ckfinder/userfiles/files/20869765951.pdf In PDF document text
    • http://av-jet.ru/userfiles/file/fodejowutegojosof.pdfIn PDF document text
    • https://butterfly-propertymanagement.com/userfiles/file/89450300169.pdfIn PDF document text
    • https://mobile-translator.eu/app/webroot/media/files/1564815990.pdfIn PDF document text
    • http://salt17.com/userfiles/files/69244884535.pdfIn PDF document text
    • https://akemi.ro/hirek/file/dilagupa.pdfIn PDF document text
    • http://mawaevents.com/uploads/file/14958140055.pdfIn PDF document text
    • http://slesnick.net/userfiles/files/futewaligininuvanopimafe.pdfIn PDF document text
    • https://cfaegaianascente.pt/portal/userfiles/files/94108730157.pdfIn PDF document text
    • https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/d751e2b427d0332ad8da737937fdc007/93675745127.pdfIn PDF document text
    • https://obermeyer-modemarkt.de/upload/file/48095630380.pdfIn PDF document text
    • https://tenderdiary.com/ckfinder/userfiles/files/wugijusotopamux.pdfIn PDF document text
    • http://vdavloeren.be/userfiles/files/82626026592.pdfIn PDF document text
    • http://khonggianmang.com/upload/files/6879635227.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/ka3oicvkl8r7jr1jf85ocbthhh/63226142283.pdfIn PDF document text
    • http://norilsk.torbay.ru/images/uploads/file/kobiged.pdfIn PDF document text
    • http://braciszewska-klimek.pl/fck_files/file/41251880558.pdfIn PDF document text
    • https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/fdd22c5df9acddebee3d85cac8a74e71/fonow.pdfIn PDF document text
    • https://syntellect.ru/Repository/file/simapogawova.pdfIn PDF document text
    • http://alarm.pl/userfiles/file/besigabimot.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/685cd0a6b44bcc41baa9a32dc10089e3/49683688526.pdfIn PDF document text
    • https://conexusinternational.com/ckfinder/userfiles/file/28381615774.pdfIn PDF document text
    • http://mtecommerce.it/public/news/file/fijosumivanivur.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/D9plVHj2VOU/uplcv?utm_term=libro+de+mary+boquitas+hijosPDF 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 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_off0000d8b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B5 18680 bytes
SHA-256: edd50ec18495bc16d0d8ed72e9332bf0a9b3482e53164ff50b4a863849362f00
font_01_sfnt_off0001082a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1082A 10952 bytes
SHA-256: 20e7756220a69e8feb779f962dc71928e71ecda09414c3863f9e9036f006345b
font_02_sfnt_off0001215b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1215B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1