Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa821bc2da1b4851…

MALICIOUS

PDF

74.2 KB Created: 2021-11-27 01:47:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-07
MD5: 2ae77cd76f9f333c0616c8c4acd9af38 SHA-1: 27d0027486c3faa86deede1e2ca71c0220837cac SHA-256: aa821bc2da1b48512fbecab5ba62d49aa5d3a6fe65bb8bb46ef819b27d9784ad
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/42fc48f9e27baf095a13acb1074c6010/56167770588.pdf In PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/1617faaa7562a7---95854988438.pdfIn PDF document text
    • http://www.ih-consultant.com/ckfinder/userfiles/files/81909084985.pdfIn PDF document text
    • https://dreamscapes.ca/dream_scapes/userfiles/files/bameba.pdfIn PDF document text
    • http://bnblspecialities.com/userfiles/files/46717580062.pdfIn PDF document text
    • http://smelawservice.com/file_media/file_image/file/59019887115.pdfIn PDF document text
    • https://ashasuchikala.com/ckfinder/userfiles/files/jemoxemudiwikasokoxev.pdfIn PDF document text
    • http://skulpt.in/admin/uploads/file/pixab.pdfIn PDF document text
    • http://xn--nellieskche-0hb.de/userfiles/file/46325644659.pdfIn PDF document text
    • http://quaint-house.com/images/blog/file/xokozozonipowopipufebokux.pdfIn PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/16132fd53a445c---jixetexewafamoxuvovabego.pdfIn PDF document text
    • http://www.naraihillgolf.com/admin/userfiles/file/fezigerupavep.pdfIn PDF document text
    • http://shengnabei.com/uploadfile/file///2021110100051295.pdfIn PDF document text
    • https://najlepsze-w-polsce.pl/uploads/rejazodebubuveberabuzivu.pdfIn PDF document text
    • http://life-homeshop.com/asset/uploads/files/xamal.pdfIn PDF document text
    • http://dobre-jaja.com/Upload/file/92914488354.pdfIn PDF document text
    • http://silver.jo/ckfinder/blanc/files/purem.pdfIn PDF document text
    • http://archive-2013.humandoc.pl/attachments/file/nijuwamemeludomizomonogu.pdfIn PDF document text
    • https://ncltandatbar.com/home/ncltandat/public_html/dowalumniusa/ckfinder/userfiles/files/23183101309.pdfIn PDF document text
    • https://mudrun.com/home/mud/public_html/ckfinder/userfiles/files/gudojagajixiki.pdfIn PDF document text
    • http://leebyenghun.com/new/upload/board/files/85099273409.pdfIn PDF document text
    • https://korovin.org/site/img_ufiles/lomuvuwowekujidaruvazol.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/RhDyTiV0TgQ/uplcv?utm_term=as+the+deer+pdfPDF 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_off0000c0b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0B4 10052 bytes
SHA-256: 0dd0051987e8bfd2fdbfcf131c750de5537dca10e246becb50773ab033e06d8f
font_01_sfnt_off0000d730.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD730 17684 bytes
SHA-256: f63465b4e8f328f1f11c7b029e26eb644680c0ef3db8b8609e98d78c1c2c1112
font_02_sfnt_off00010576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10576 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336