Malicious PDF — malware analysis report

Static analysis result for SHA-256 4afadcbff9f581fa…

MALICIOUS

PDF

77.0 KB Created: 2021-06-25 21:57:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 59fc2c8de477eb287e4d773236da670d SHA-1: 9c2572d5d101e25013d0384d1c0e4bd5ff5d5177 SHA-256: 4afadcbff9f581fabe9566aafe6dda68681dc4c73ea8d0a2b5d00642890982fd
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://garglob.ru/uplcv?utm_term=how+to+change+orientation+pdf PDF link annotation
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/64dv3smfn2napvdv8vdh1godsk/davuwas.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/fc5ee50bf41f11e971ae895f6c06214e/runotakefepufejeru.pdfIn PDF document text
    • https://www.horisunmauritius.com/wp-content/plugins/super-forms/uploads/php/files/c17fe8eaf6340aef2680658c16802fdd/91982689220.pdfIn PDF document text
    • https://aartipalette.com/userfiles/file/zitebi.pdfIn PDF document text
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609529e9126e0---73503469447.pdfIn PDF document text
    • http://opuspoint.com/ckfinder/userfiles/files/76175969192.pdfIn PDF document text
    • http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160be741520d53---mowelalipoke.pdfIn PDF document text
    • http://taikenplan.jp/ckfinder/userfiles/files/litalezibudepup.pdfIn PDF document text
    • https://goldenapp.net/file/nosopisamuvawifivux.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccf1f135c6---67066243630.pdfIn PDF document text
    • https://www.cdscabling.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609a094ebd19d---82130209915.pdfIn PDF document text
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/4de86076bac915ed753c61c90695996b/vexupoxezumogimuxixunasux.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a5aaab3c5cf---39618939205.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608191e946e25---fukamotefatoremavageg.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/3966268948.pdfIn PDF document text
    • http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/hbhonphi93o8ipe4f73mukcek4/piteworuvidozuwoxilotuso.pdfIn PDF document text
    • https://segurosjdd.com/wp-content/plugins/super-forms/uploads/php/files/aac33mrspobal3uns96cek91i1/48831358201.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/pmhmbm6qvmts4nshqheqa2utn6/ladalamapodukuraxa.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093f6c71f41c---39450641011.pdfIn PDF document text
    • https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/77ca56ea6b68dbf70a95d26408f8a8c1/33969925374.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021052516520184.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c9d0dfc73d0---60838880197.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/94841715972.pdfIn PDF document text
    • https://kraftyz.in/ckfinder/userfiles/files/33210453736.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_off0000cabc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCABC 16912 bytes
SHA-256: cc998683283ec16b1bdf0ad971ce847f985dcc50fd04931653ac4ab21a4f52e8
font_01_sfnt_off0000f66f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF66F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010e86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E86 10760 bytes
SHA-256: 6184800155f2697ade7b91000c4550013fb42393fecbaa27334e7dca6cfcbcaf