Malicious PDF — malware analysis report

Static analysis result for SHA-256 96287c12448db763…

MALICIOUS

PDF

113.2 KB Created: 2021-07-01 23:21:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 6e6d53cc095f4fb8e1b52bd0f89f9b0b SHA-1: 17c2fe6f4ef2b96b03d90b0a906478e06bd39378 SHA-256: 96287c12448db763ca2d7aaeb1ed0d0d7f9749a1343fe0e2a23396fd76dd807f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF contains a link farm hosted on compromised WordPress sites, suggesting an attempt to distribute malicious files. The ML classifier and ClamAV detection strongly indicate malicious intent. No scripts were extracted, but the presence of multiple links to PDF files on compromised domains points to a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9921

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://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/160d5a53a21d60---fapofekafewiriximalexibe.pdf In PDF document text
    • https://accuratesearch.com/userfiles/file/jemexukosijanexexilo.pdfIn PDF document text
    • http://okmarin.ru/userfiles/file/vapejeto.pdfIn PDF document text
    • https://www.schroedersales.com/wp-content/plugins/super-forms/uploads/php/files/25e60331007650c457da81e9b8bd44a3/36911536478.pdfIn PDF document text
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b56012d28b8---nolivopejudotuxefobato.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609f0d552bc71---47460876514.pdfIn PDF document text
    • http://yao-cheng.com/uploadfiles/20210620225114.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607b462aa3525---99977407046.pdfIn PDF document text
    • https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160969d964c53d---fatapifanifedal.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608e94ae5e69d---14957408484.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607757e41e148---57306701291.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/p3rll6cu27us60sjbtjim25e8h/32345382840.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/0rffjjo5ru9juim5gk4g2tgk2r/godaseberorewa.pdfIn PDF document text
    • http://meble-tk.pl/userfiles/file/biguvowufezegexopi.pdfIn PDF document text
    • https://atcotourismtravel.com/userfiles/file/megalolerekidojulupij.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608acb2fcd980---nexeg.pdfIn PDF document text
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/derigiturowa.pdfIn PDF document text
    • https://aradovan.com/userfiles/file/42064167326.pdfIn PDF document text
    • http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160acd2a7d13aa---bujuta.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c5aac7611b6---6726062689.pdfIn PDF document text
    • https://anpheatingandac.com/nbloom/fckuploads/file/73788564325.pdfIn PDF document text
    • https://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/464911cb1c71cd141d19ba3352a50efd/nizobiwonitetopikokit.pdfIn PDF document text
    • http://learnersdigest.org/userfiles/file/81805074472.pdfIn PDF document text
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160733691023d5---35803768376.pdfIn PDF document text
    • http://atomleasing.ru/media/File/dageranerugamilimadaralim.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=ppsspp+iso+download+for+androidPDF 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_off00014d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D7C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00016593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16593 10348 bytes
SHA-256: 0d9b416dd9c426aa73f26e703025b818d530aebe867ec25e6ace6e81b7f78714
font_02_sfnt_off00017d0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17D0D 26808 bytes
SHA-256: d39e3f64e5edd18997f3873176b4fd074e6d9e54f96defdba39160e3bc17e943