Malicious PDF — malware analysis report

Static analysis result for SHA-256 693a3785894fffef…

MALICIOUS

PDF

81.9 KB Created: 2021-06-25 21:04:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 9ce3c513c62d4705365706f3ba5f4e1b SHA-1: 5e680c61e4c4ba18d46c9754bc632de185abe1d6 SHA-256: 693a3785894fffef084cb5e64cc8e990b8358818867bc4e0f4f22e7e0a581837
156 Risk Score

Malware Insights

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

This PDF sample was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous embedded URLs pointing to potentially compromised WordPress sites and disposable hosting. The primary purpose appears to be directing users to external resources, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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 http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/4087b55b0b58905054852257ab10acd8/19756160515.pdf In PDF document text
    • https://nestsearch.in/admin/uploads/file/zapokajabosukidebovaxasis.pdfIn PDF document text
    • http://alacarte-design.de/userfiles/file/43133891787.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607539d202aad---jopixujiwesipatabeselufet.pdfIn PDF document text
    • http://cerrutistudio.eu/userfiles/files/17262263928.pdfIn PDF document text
    • http://analogsys.com/uploaded/file/19408576756090d472c351b.pdfIn PDF document text
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/160ac4265929c6---fufik.pdfIn PDF document text
    • http://vinmexindia.com/uploads/muxetowitukupemimujiwo.pdfIn PDF document text
    • http://ampletrekking.com/userfiles/file/69816019691.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607a734919daa---muxibe.pdfIn PDF document text
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/narnncdrnu8585ljct6bmslv53/fulilesunum.pdfIn PDF document text
    • https://editions-tlp.fr/ckfinder/userfiles/files/32051936800.pdfIn PDF document text
    • http://france-ex.com/images/blog//file/mipexejiluwi.pdfIn PDF document text
    • http://icltindia.in/userfiles/file/fupama.pdfIn PDF document text
    • http://payassistinc.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607699c020066---dilinelotumitagelalaziviz.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/f39b40c7300d4b073e72d7bb63abaa2f/nawurotabegid.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/19df34a6b83ae73eff9bccc36193ea02/18633439941.pdfIn PDF document text
    • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/8b7b9aa01815c281c8ad69943bb68651/xejabove.pdfIn PDF document text
    • http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d4aa1d043da---24682125236.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/98a587c836269a4e13558be1026538b1/95620271233.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/51b23bbeda23243d9c9719742833a100/59859422870.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/10bf66dc9f81bd33a5f5c48998a1b5db/11174379952.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=cell+cycle+mitosis+worksheetPDF 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
stream_005_off00011ff7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x11FF7 17568 bytes
SHA-256: 68ed4507252b4e0a43d3060e0b6c098eaeb3641ec5ec768c45bde3c198757468
font_00_sfnt_off0000c815.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC815 15616 bytes
SHA-256: b2b5ae25daaba0b2840a4e5c5548ff65008924cad908daac945382454f670af4
font_01_sfnt_off0000efbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBC 10552 bytes
SHA-256: 601b0cea7be5e64aeed6fa4bcde7783520d6b3c5e62f604f0e71ec38e5851e5d
font_02_sfnt_off000107e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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