Malicious PDF — malware analysis report

Static analysis result for SHA-256 f266fd1027b2d136…

MALICIOUS

PDF

83.6 KB Created: 2021-07-01 12:53:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 197bd1a57dfc62d3be1b331e8e89ee1f SHA-1: 9ad03469a50a4eff97cc73e1ddb1d47050c7db2d SHA-256: f266fd1027b2d13601bc7e2349ef8437218a5db1bd69639b5a68fd50d66814e5
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous external links, many pointing to compromised WordPress upload directories and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The primary purpose appears to be directing users to external URLs, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 https://irlanc.ru/uplcv?utm_term=what+is+sport+sociology PDF link annotation
    • http://polskienarty.pl/data/aktualnosci_imgs/file/binixinawejusamova.pdfIn PDF document text
    • http://photou.cc//ckfinder/userfiles/files/19058990855.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/93757336125.pdfIn PDF document text
    • https://almoheetmanpower.com/public_html/userfiles/file/65812902530.pdfIn PDF document text
    • https://hosvagyok.hu/userfiles/file/11856236463.pdfIn PDF document text
    • http://chapmanhighschoolclassof1968.com/clients/c/cb/cb1fed5110c07f199f416a264ee6943c/File/40140940574.pdfIn PDF document text
    • https://aspirans.com/files/file/dupedag.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/4246b5dff9592ef8201a7da6ef7ad9e5/zoxaxuruvotisifugixavof.pdfIn PDF document text
    • https://www.axelendinggroup.com/wp-content/plugins/super-forms/uploads/php/files/6b14f394fceb0409c4091fbb2dd22afe/vufubeka.pdfIn PDF document text
    • https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb2d6c5a2d2---25791742719.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/1o54b2n5tsh7ect67gvljl08vb/13470502177.pdfIn PDF document text
    • https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa3ae6c18d4---ropavesupujarilomatunar.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1609837cb8441f---12827054539.pdfIn PDF document text
    • https://termoformat.md/img/files/32721408023.pdfIn PDF document text
    • https://actioncoach.com.my/wp-content/plugins/formcraft/file-upload/server/content/files/160b1dbdd9ddf0---88692834891.pdfIn PDF document text
    • http://tasarimak.net/ckfinder/userfiles/files/81767289128.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c147d8157ad---12709307872.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098368089ef9---27636511650.pdfIn PDF document text
    • http://xz-brand.com/ckfinder/userfiles/files/37201449191.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608246746a999---gupikapuremelezosazek.pdfIn PDF document text
    • http://andreaslasnik.com/data/files/rubimo.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/34787717401c67a302a057a2cf0ef1a0/vujusojatimuzu.pdfIn PDF document text
    • http://jerilyndavisrobison.com/clients/870655/File/takapovovanilo.pdfIn PDF document text
    • 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_off0000e6a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6A3 16344 bytes
SHA-256: 7d6dd2bf47c5d0fcd5764a51139670ceea2291a34a03896ee53509f6d9c4eb6a
font_01_sfnt_off00011103.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11103 10524 bytes
SHA-256: 49c240b033bce89da92f34b532595c1098ad2271bef38bc70781cbdbd6699365
font_02_sfnt_off0001292c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1292C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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