Malicious PDF — malware analysis report

Static analysis result for SHA-256 89d2de594d9795ab…

MALICIOUS

PDF

97.3 KB Created: 2021-06-28 10:29:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 817e2e04dfc03da852eea587b4cd5033 SHA-1: e347b3f61f6488d13ba7a2f10312cd00c419fa56 SHA-256: 89d2de594d9795ab9f32f6b52ef62cf30f2312358999f7372d924345c54e9df4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a large number of embedded URLs, many of which point to compromised WordPress sites hosting other PDF files. Heuristics indicate this is a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16076b4248a60b---43699738087.pdf In PDF document text
    • https://dock-levellers.com/upload/files/85521978309.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a61f723ed86---pefawiba.pdfIn PDF document text
    • http://arohitourandtravels.com/userfiles/file/12950509795.pdfIn PDF document text
    • https://www.explosivo.gr/wp-content/plugins/super-forms/uploads/php/files/47480355bd4c18afbc31484dabda62b1/26801458972.pdfIn PDF document text
    • https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c3624c6f857---28185955022.pdfIn PDF document text
    • https://west-holding.com/userfiles/file/20855020530.pdfIn PDF document text
    • http://perles-del-beya.com/userfiles/file/5444698922.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/f9817a2d88efba0d0c1198b6022e60f9/miridebofuzeda.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c84fe85010---zewonilato.pdfIn PDF document text
    • http://www.aportecnica.com/imagenes/editor/file/19999806654.pdfIn PDF document text
    • http://aj-logistics.com/stock/userfiles/file/17462481348.pdfIn PDF document text
    • http://cartopack.com/Images/file/19489096485.pdfIn PDF document text
    • http://voxel-avocats.fr/uploads/file/verawabixetibifesatovovo.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/d392d39746a24a2d1fcfa483839ef8e7/60930750257.pdfIn PDF document text
    • http://autoshiftbid.com/fckeditor/userfiles/file/52171132010.pdfIn PDF document text
    • https://remoteyourstaff.com/calisma2/files/uploads/teter.pdfIn PDF document text
    • https://cualuoihoanmy.com/uploads/userfiles/file/12135336955.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/79655b22b592b383c1cc1c82623e3477/26714700589.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ab678e43669---32590733740.pdfIn PDF document text
    • http://faurerom.com/userfiles/file/90218206757.pdfIn PDF document text
    • https://newat.ru/wp-content/plugins/super-forms/uploads/php/files/7f57a9bb8a707d0e254ab9ace60347e8/bilesipewudovesisek.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=crash+bandicoot+warped+how+to+get+all+gemsPDF 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_off000118b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118B1 11220 bytes
SHA-256: e11e2b370eccd087b3a97675cf971dcd28e841044d6528af9078cf44bfa84fc0
font_01_sfnt_off0001326d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1326D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014a7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A7F 17320 bytes
SHA-256: adb2be192466142e53fdd5b1239ba437a153a640559e3a4672198db08d3f3625

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