Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0d68f53e385e383…

MALICIOUS

PDF

97.2 KB Created: 2021-07-03 01:41:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 66b241b9424cff4e8ea05b9e49845de8 SHA-1: 3d934d9b2a7795afe1ee279875e5347cddcab9aa SHA-256: b0d68f53e385e383ce28aa8836a0631dc292335ee30b04866eb3499ca3785e0b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to compromised WordPress upload directories and other disposable hosting sites, likely to distribute further malware or phishing content. The presence of numerous links to potentially compromised CMS upload storage reinforces this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9910

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://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/5968169bd10985779b3c5bd719632de2/joxoxasurejeximiluvobiza.pdf In PDF document text
    • http://kaitosushisb.com/uploads/files/munakasa.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/16095e3754660d---10716476943.pdfIn PDF document text
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/778d0406648e4f53486c69fdc9663542/ruwidixukotu.pdfIn PDF document text
    • http://faradbox.pl/files/file/22530701474.pdfIn PDF document text
    • https://perleyparish.org/wp-content/plugins/super-forms/uploads/php/files/99536df99784346e450802f47b84e824/50827437301.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070874ebba5d---77494213665.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4d79602358---2157567999.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d748ce85743---wumel.pdfIn PDF document text
    • https://www.olympusnorge.no/wp-content/plugins/super-forms/uploads/php/files/sop8v4rjb1tuorudcfoogcjc7j/25450906644.pdfIn PDF document text
    • http://ebsenglish.net/_UploadFile/Images/file/13466458813.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16078bdf17e047---69463156472.pdfIn PDF document text
    • http://wrtour.com/FileData/ckfinder/files/20210611_07FAAF5F4C13ED40.pdfIn PDF document text
    • http://otoozevran.com/resimler/files/nuxemezekoz.pdfIn PDF document text
    • http://expertcomptablecourreges.fr/michel_courreges/userfiles/file/30640953485.pdfIn PDF document text
    • http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091705179492---15547992964.pdfIn PDF document text
    • https://lolakarimova.uz/ckfinder/userfiles/files/kejulagebonoteveterar.pdfIn PDF document text
    • http://12shio5.com/contents//files/zerorutaruruselozomimex.pdfIn PDF document text
    • https://www.alarisusallc.com/wp-content/plugins/super-forms/uploads/php/files/3bf6fbeecf2d97fea5b1353fd350c87c/wojijar.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb5181a4331---2302835887.pdfIn PDF document text
    • http://mppscstudy.com/admin/usercontent/file/81476167885.pdfIn PDF document text
    • http://dorp.pl/userfiles/files/lokasul.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7e2964a4e---dixonenazuporube.pdfIn PDF document text
    • http://boatmonies.com/uploads/files/gizinode.pdfIn PDF document text
    • http://perchegouet.com/ckfinder/userfiles/files/95497335876.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=sub+dom+meaningPDF 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e53e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE53E 16880 bytes
SHA-256: 8aabe7a0dfd05b9a202d234c42ac3c1287ba28c9985da2339bfb2948e402a5aa
font_01_sfnt_off0000fd94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD94 27568 bytes
SHA-256: 5e7e86d18d578dca90c494cae73718c60fce3c587b3d81ea34a201d85a371b35
font_02_sfnt_off0001477e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1477E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00015f95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F95 10492 bytes
SHA-256: a743e7c3323b96dfb0a9504b49a2bc9699ebaa5b132a2dff26f35873580f3735

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