Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebde4ff5f46d82d2…

MALICIOUS

PDF

97.5 KB Created: 2021-08-02 20:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 92740b3d5117a95e9ca5c911ba06a3b5 SHA-1: 7f2f48e6bf8b94c43af65cf681d6c5563a7108ac SHA-256: ebde4ff5f46d82d2ce6558a95695db2117c63f64243994e47ce9da508615371c
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external sites, many of which are hosted on compromised WordPress installations or disposable domains, suggesting a link farm for distributing malicious content. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates the document likely provides a password to decrypt a subsequent archive, a common tactic to evade initial security scans. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. While no scripts were directly extracted, the overall structure and heuristics point to a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://ingmontagna.com/userfiles/files/8091898237.pdf In PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f477f70e89---manopegojonexutajelulabiv.pdfIn PDF document text
    • https://blueparadise.pl/userfiles/file/nutidimeb.pdfIn PDF document text
    • http://ordinate-ltd.com/file_media/file_image/file/94911174887.pdfIn PDF document text
    • https://sokolzgierz.pl/web/uploads/files/34180606419.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/5d9a7da93d43eef86629ac84ff6aba05/30075196695.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16089be0d35b6d---70504874749.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/161082a63849a3---vofunosifusatot.pdfIn PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6db33eacbf---60630599340.pdfIn PDF document text
    • http://be1971.com/clients/a/a1/a19be2fc4cf8b198b52f296748481ce5/File/wiguzaji.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/160985c5ed8bdf---xopononawukebego.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e8e2585e472---83745361239.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e16cb9aad17---juzavo.pdfIn PDF document text
    • https://limmaginebistrot.com/file/93403946353.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a9b3d8ee487---xazenobije.pdfIn PDF document text
    • https://nbcmedia.vn/ckfinder/userfiles/files/dupagapini.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1610636b00fe8e---43195757512.pdfIn PDF document text
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/887ad2116ba7b9d7c8b229279d6c3f53/38498625649.pdfIn PDF document text
    • http://globalsocialwlefaresummit.com//app/webroot/uploads/ckuploads/files/xesakenokawalabunaxo.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/bv74cfioov3quqr45lqhcm3v34/3185428532.pdfIn PDF document text
    • https://alice-immo.com/userfiles/file/limumaropudukivazed.pdfIn PDF document text
    • https://b2b-intelligence.it/uploads/file/79359008456.pdfIn PDF document text
    • https://trexanh.net/upload/files/30155238680.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/fbff04f6ed7a48d4130bd4cb87c71640/gojujupimosuwetini.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=what+is+the+default+root+password+for+kali+linux+2020PDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f5c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C8 11212 bytes
SHA-256: f14aea45c6033964c1c4b8c342e117784ad41a476cac55157c8e08050948d3f9
font_01_sfnt_off00011015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11015 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012827.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12827 17844 bytes
SHA-256: 7751c28cf9ac64f9eb37982c14a479464678414d00560e16afdf1c9df0bb8b55
font_03_sfnt_off0001572b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1572B 1756 bytes
SHA-256: f8927680f88d124c6c5cfbeef6e113f3efbc68aae03ca4931fd4ea66e39fe101
font_04_sfnt_off00015f57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15F57 16344 bytes
SHA-256: 5cd8a120e106fc2d4fc1855603a636a3ce922decfb1b4d98f17a4a5450337c58

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