Malicious PDF — malware analysis report

Static analysis result for SHA-256 936fed26a728fa21…

MALICIOUS

PDF

84.2 KB Created: 2021-06-29 09:14:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a33544754556cbe6dcd0fb0973d50ff0 SHA-1: c9e124151f235c59b6edb7e55b6c7b8617c479a5 SHA-256: 936fed26a728fa210b28e4281cd86dde4371e179ee860a57dba7ec3da180bc3a
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan distribution vehicle. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress upload directories, suggesting an attempt to lure users to malicious content. The presence of these links and the overall structure strongly suggest a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160bd0e7ff3e9e---suzefutax.pdf In PDF document text
    • https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a53cf5468e8---ruxubuzobakavexutewaboji.pdfIn PDF document text
    • http://esistore.de/userfiles/file/wafibesajatofinitogo.pdfIn PDF document text
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160955d5ae22f7---rukovum.pdfIn PDF document text
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/0fd4f88e6ffee0385d5093d5b33dbd47/94977598578.pdfIn PDF document text
    • http://theartofdesign.nl/ckfinder/userfiles/files/zesavurazefejizujiliropo.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608a6d44bfc05---2460745834.pdfIn PDF document text
    • http://electrogalicia.com/electrogalicia/recursos/archivos/25699828564.pdfIn PDF document text
    • http://r2doodles.com/clients/4/4a/4a4ed909dcef54c1e3ec6a0ce1d29f2d/File/5890711927.pdfIn PDF document text
    • https://popa.com.br/wp-content/plugins/super-forms/uploads/php/files/f6f1c3c1e9a829a876f0ed71241cfe1e/91879589632.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/7fefa639bda3f542eccba9694f6a1a46/39020155222.pdfIn PDF document text
    • https://chp-travel.ir/data/file/24917515501.pdfIn PDF document text
    • https://terravistahometeam.com/wp-content/plugins/super-forms/uploads/php/files/0553cc446f5f6206575bcdd4e0330597/89405624455.pdfIn PDF document text
    • http://www.grupohk.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16080aef2ef977---lozaworidowaxen.pdfIn PDF document text
    • https://atlasautoglass.com/wp-content/plugins/formcraft/file-upload/server/content/files/160855bb872ede---dijolijaninajazi.pdfIn PDF document text
    • http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a443ab3e40a---30892290135.pdfIn PDF document text
    • https://djhelaly.com/wp-content/plugins/super-forms/uploads/php/files/2fcc1c41b64a34c8ce2a23821d4f4506/74409569609.pdfIn PDF document text
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/k1sact0ivoctanol6jdfummoe3/91887118794.pdfIn PDF document text
    • https://tamtam.com.ua/wp-content/plugins/super-forms/uploads/php/files/ca83ea1e58bd2e55bbd3509e07e47348/92113045214.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/7ae2e160c5d8a58135d157936456c59a/gofexijinikuvagasobe.pdfIn PDF document text
    • https://bringem.de/wp-content/plugins/super-forms/uploads/php/files/d56df469115e3a255e707a11048364d8/71326016151.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160769355ec2b7---40031057723.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/1ea3c90a14b2f37c852f293d42cf6957/73643837196.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=types+of+transductionPDF 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_off0000e693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE693 16948 bytes
SHA-256: 3f078ce9a13552fa0b63d00f7df3437958480c722edac3acf81ab321e4916972
font_01_sfnt_off000112fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112FD 10744 bytes
SHA-256: bff519ee6264f307bd6af5f92fb209e5827d933287a5166040a925d719dd811d
font_02_sfnt_off00012be1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12BE1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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