Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd34059e0a7c538…

MALICIOUS

PDF

86.3 KB Created: 2021-07-08 07:01:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 82d64f6993a049e1fc70c5c362d9b319 SHA-1: 29f0e7acc5e85376314bebba122dd4e802669a82 SHA-256: ffd34059e0a7c53866f4ad507a4eb8efe463632f19809d428b6c0e70653854ad
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous URLs pointing to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the presence of these links and the overall detection indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 http://argra.rs/wp-content/plugins/formcraft/file-upload/server/content/files/16092a0b8e3869---biravatajiloxopovolutesod.pdf In PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e45091816d---17826186253.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1607511a837071---97234668023.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/d4b0e30cd29c3faa8a5fa876abee00f0/547093253.pdfIn PDF document text
    • http://0851gay.org/userfiles/202107file/2021070120141070554.pdfIn PDF document text
    • http://xn--or3bi2da319p.com/upload/fckeditor/file/21609739288.pdfIn PDF document text
    • https://ehotelgateway.com/bot/ckfinder/uf/files/fagajesikujifibinaxovuw.pdfIn PDF document text
    • https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/96d2ico2qmkmb261f1f1nr14v9/5985424604.pdfIn PDF document text
    • https://coolingrealestate.com/your-home-cleaner/FCKuploads/file/xoleduvoma.pdfIn PDF document text
    • https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/aago8bk4nspsddb4360qodhjsr/55113535689.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/dc7e9611a74e7461a6ce91ec839650cd/30114506752.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/10225475752.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/160b37aca0c74e---39044426505.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609836f877a8d---ravubenomafoxinuwuwoseles.pdfIn PDF document text
    • https://sygimportaciones.com/wp-content/plugins/super-forms/uploads/php/files/qgif8fpffgpd8d56gst56gv5gp/37810558807.pdfIn PDF document text
    • http://cga82.com/admin/File/rikivofa.pdfIn PDF document text
    • https://sipsib.ru/wp-content/plugins/super-forms/uploads/php/files/d80cae0538af772be62f7535ad133de2/karizo.pdfIn PDF document text
    • https://www.propertyfilevault.com/wp-content/plugins/super-forms/uploads/php/files/82197128827b1b05eca1cb44ceae4f8d/najegasopovun.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/8354ca052d6c91a729389cd5fe019d49/bijilogoj.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/3dcaba500b77f736733d6f51336acab2/39750823877.pdfIn PDF document text
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5cbed0d127---15516318956.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/3pih837g2mroig6n2bvci2b74o/66510362931.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=load+a4+paper+in+manual+feed+slotPDF 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_off0000de1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE1F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF631 30268 bytes
SHA-256: 3b10e7993d8cf0cc6fc67fa6e311af81a9611b3943f03c0052f33f341ebf8683
font_02_sfnt_off00013178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13178 10796 bytes
SHA-256: 1a9caf46bb75fbea4053e02c29ad54c8c01c7a39d4c7819169faf8ae9890e7d1

Open this report in the interactive analyzer, or submit your own file for analysis.