Malicious PDF — malware analysis report

Static analysis result for SHA-256 58883663d2f29603…

MALICIOUS

PDF

81.4 KB Created: 2021-06-25 23:01:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: fd7569429043015e0f251208639adf3d SHA-1: 9a3fc2f8101879f54d39079e048ddafa72f3a862 SHA-256: 58883663d2f2960341331e82dffb37baa41449b45f00a196a358a6cb1aeb9ee4
156 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains numerous links pointing to compromised WordPress upload storage, suggesting it functions as a link farm. The URLs are likely intended to redirect users to malicious or spam content, aligning with phishing and exploitation tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9968

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://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/160792bef4ac89---tugipemowuseparaxelin.pdf In PDF document text
    • http://dlt-nkp.com/fileupload//file/legotudova.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608d7efb5f96e---sawixefuze.pdfIn PDF document text
    • http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/160d45d07641cf---durafaxemofoz.pdfIn PDF document text
    • http://epoetryworld.com/clients/53741/File/4878534583.pdfIn PDF document text
    • http://alexanderjamesbackcatalogue.com/userfiles/file/pupurixore.pdfIn PDF document text
    • http://esipro.fr/userfiles/file/bijomapabixiwiwazufub.pdfIn PDF document text
    • https://www.kunapak.com/wp-content/plugins/super-forms/uploads/php/files/dkgu1dlhql0v8nukm021rbq1l3/96166155431.pdfIn PDF document text
    • https://immobilgold.com/file/nozowifabisode.pdfIn PDF document text
    • http://enjoybowlramenandpoke.com/uploads/files/11381384436.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/c9c56c42c46574c322411ff10d28c3b0/59107040014.pdfIn PDF document text
    • https://www.nordatec.com/wp-content/plugins/super-forms/uploads/php/files/o6ah4sednavioebcvgs0qdcpc3/18208627797.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/cba4ea32dd49bbc8dd4faf4d608fbfba/jitugadawuvezeduxazojuned.pdfIn PDF document text
    • http://zrdb-drogbud.pl/Upload/file/20650594241.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fff6478815---muxofekufumogamixipetali.pdfIn PDF document text
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9b0364c63a---90374754222.pdfIn PDF document text
    • https://www.drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b344709b843---maxuwimakosajatapefumud.pdfIn PDF document text
    • http://ankamet.com/userfiles/file/nirifuzabazisawuxevikir.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/b39d9dd08a6459950164610926df8380/98374473085.pdfIn PDF document text
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/f8a59d58dec33f939dbb69dc49a1f500/notugo.pdfIn PDF document text
    • https://allmassage.net/upload/file/20210521131354.pdfIn PDF document text
    • https://www.properties-thassos.com/wp-content/plugins/super-forms/uploads/php/files/kvhvclt10r59qhvmncjpqiolra/75227364474.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=how+to+find+the+mean+with+standard+deviation+and+sample+sizePDF 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_off0000dbe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE2 10968 bytes
SHA-256: 0bedb36472454927e95c26d5fc86175e21f6ce8b1d053224af6383d20ec43502
font_01_sfnt_off0000f522.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF522 16444 bytes
SHA-256: 621c3c51918f08f2e7d4d8feea427958f9e66a10ccb23d92c2c0d1596db861ee
font_02_sfnt_off0001200d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1200D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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