Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7f00689e1772ae0…

MALICIOUS

PDF

82.9 KB Created: 2021-07-17 22:35:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 03ae26d333ba817d1b2d7e8829646e73 SHA-1: 74ca9454206c51acc817592f71735298bafabe58 SHA-256: d7f00689e1772ae0a68f8a275d48d145942c09cf26475e43bf1481d61ec5ec07
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and the 'SE_ADVANCE_FEE_SCAM_LURE' heuristic strongly indicate this PDF is malicious, designed as an advance-fee scam. It contains numerous links to compromised WordPress sites and other domains, likely serving as a lure to download further malicious content. No scripts were extracted, but the document structure and heuristics point to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

Heuristics 5

  • 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://beyondpins.com/calisma2/files/uploads/burixonuli.pdf In PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16093a2000fe24---durefivax.pdfIn PDF document text
    • https://na-nule.ru/wp-content/plugins/super-forms/uploads/php/files/8d0b942dru3ar3a1kijf9t41i1/lidipuwonamevunos.pdfIn PDF document text
    • http://nadiadsa.org/userfiles/file/zewisigudojuwodotitav.pdfIn PDF document text
    • http://arch-teh.com/pic/userfile/8960863490.pdfIn PDF document text
    • http://minuspk.ru/minuspk.ru/userfiles/file/mijel.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607ef7175f322---25254228461.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/6bhdb4u413l47r6proomf2r8ei/waxisogo.pdfIn PDF document text
    • https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/b06a5e40c0b9fc927faa4b38d774d136/64482131463.pdfIn PDF document text
    • http://hongshengfish.com/uploadfiles/20210515/2105151513204498328fl3g5nxdg53.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/2a205744df756b58dba630d8cfa3ac03/jalojufovifogogolobageg.pdfIn PDF document text
    • http://bobas24.pl/Upload/file/13187611377.pdfIn PDF document text
    • https://www.digitalsofts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0c9d0f3da1---90784251965.pdfIn PDF document text
    • http://bebelino.ru/userfiles/file/xofamapovefofuwupufisit.pdfIn PDF document text
    • http://ricarda-allegra.de/userfiles/file/lanarawagojax.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086c00e4fbf5---xugoxezopo.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/3a6fc3eb488a6dc62a70881675027833/75388703240.pdfIn PDF document text
    • https://graveyards-fuj.ae/userfiles/files/68667788298.pdfIn PDF document text
    • http://accapierre.it/userfiles/files/85595515076.pdfIn PDF document text
    • https://www.sacict.or.th/ckfinder/userfiles/files/45012184569.pdfIn PDF document text
    • http://www.everhouse.lt/wp-content/plugins/formcraft/file-upload/server/content/files/1609515e8bee97---gixod.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/bc69ff694d1a732d8c76812193c667cb/57051818727.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=horticulture+department+chikmagalurPDF 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_off0000e0c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f8d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D2 17156 bytes
SHA-256: 24949db9d8ec777eb003c851591099d8bad3e7f626b18117d4d65e8bc1f36f14
font_02_sfnt_off0001258f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1258F 10976 bytes
SHA-256: dda5cc964f3391abe228afbf86ddf3464d5f6ea8be71857dc812aa716b544f20