Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d7629c93745131d…

MALICIOUS

PDF

100.0 KB Created: 2021-07-03 20:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e8a95dde7dc1819c1141ceb46954d851 SHA-1: d423330ec90a760afbe7f77b26f8d8af1de3de62 SHA-256: 1d7629c93745131d8146ff4675601509489542d86402fcddd5e3727bf8c15970
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to compromised WordPress sites, which in turn host more PDF files. This structure suggests a link farm designed to distribute malicious content or lead users to phishing sites. The ClamAV detection and ML classifier further support its malicious nature, indicating a phishing or trojan distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bab75c05674---vanamowesabozal.pdf In PDF document text
    • https://ideylia.fr/uploads/file/jagerugidakovexixugi.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/c0fb92988341bcf215ec32e5402ae331/15287608259.pdfIn PDF document text
    • http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/1607f858025a85---13040361476.pdfIn PDF document text
    • http://beckydavidsonhomes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a42f9f1780c---35651328735.pdfIn PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160927d005480b---46179237751.pdfIn PDF document text
    • https://greenfuturevietnam.com/Upload/files/54183776960.pdfIn PDF document text
    • https://brune-schmuckwerk.de/ckfinder/userfiles/files/30876069782.pdfIn PDF document text
    • https://www.guestquesttravelmedia.com/wp-content/plugins/super-forms/uploads/php/files/baoe5o5u5tvdbj9h9v56n97j57/dolozukaso.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160928630169de---45743632800.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160756ae5d1437---lisetonokemawunawegeg.pdfIn PDF document text
    • https://vettercycles.ch/userfiles/files/68711506271.pdfIn PDF document text
    • https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/3qhcp1e8aa97jiubbg066ogi9o/sumizegotopobefekipav.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16071d8792823c---pofuk.pdfIn PDF document text
    • https://creativesilhouettes.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160cb64c461024---82022329816.pdfIn PDF document text
    • https://www.pietri-automobiles.com/wp-content/plugins/super-forms/uploads/php/files/3bftge3k0vm9823h45nbbqehko/zobudavu.pdfIn PDF document text
    • https://addsfly.com/userfiles/file/dabotaramuliwe.pdfIn PDF document text
    • https://mgogs.com/mgfiles/file/13891915425.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160b1df3d2bdb0---93874059484.pdfIn PDF document text
    • http://appartenvue.net/appart/upload/images/70269791301.pdfIn PDF document text
    • https://kamber.dk/wp-content/plugins/super-forms/uploads/php/files/1ef7137723d0085394ef931d9d12507a/48671232421.pdfIn PDF document text
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609be407ac6ff---70906307169.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=nodal+analysis+equationsPDF 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_off0001244d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1244D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00013c64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C64 10476 bytes
SHA-256: eadac290375440ef27c76db1424c8056c84229700818e93a59a396d95e32022b
font_02_sfnt_off0001541a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1541A 17696 bytes
SHA-256: 41d769dd174b9001c8ea6d57553a23cf727264555bf1d3dab6f9c461b5686fab

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