Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cbaf162a0bf0863…

MALICIOUS

PDF

81.2 KB Created: 2021-07-12 23:18:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e819e8a3f1d2493fe4154ed4b8e31177 SHA-1: 2a0e414718473fdd14d77b91eee129b924be6def SHA-256: 7cbaf162a0bf086340f12acff0535190330a97b09770146cff34a16cc73da3a5
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The file's structure as a link farm suggests it's designed to redirect users to potentially harmful content.

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://philabc.ru/uplcv?utm_term=how+to+delete+pages+from+pdf+in+mobile PDF link annotation
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ba980da048d---59653617932.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb81d4943c---todumufeg.pdfIn PDF document text
    • http://bygreenpure.com/userfiles/file/82292197652.pdfIn PDF document text
    • http://crocepadrekolbe.it/userfiles/files/34970935480.pdfIn PDF document text
    • https://maryamghiasi.com/images/upload/files/wupuzedapajinemadasifape.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/a3qiif6fha37nqbk174951abid/65317631713.pdfIn PDF document text
    • http://chinasoftcore.com/userfiles/file///surebuzedawelug.pdfIn PDF document text
    • http://bestbelly.org/content/files/files/kiriponifegejamupumot.pdfIn PDF document text
    • https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b494125e77b---46277618481.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/i329dj0r7807ai222at8sp0rs2/pijiketefu.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/856888ec5eac14674815eb6e5c2319cb/jirokozojiwusejapolero.pdfIn PDF document text
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/ce7f1f57c64c887dc9883ee7248af857/vewunojoduro.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/160840e8d0a3f8---xegezadag.pdfIn PDF document text
    • http://qunjl.com/userfiles/files/lavaketapimuja.pdfIn PDF document text
    • http://howsonfamilyreunion.com/clients/5/57/57b8fe7d350e782a16e6afc8bdcd6467/File/lemosibadozawaxigilifidor.pdfIn PDF document text
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/f2c56c0c1c43475b7063ae171f6e64cf/98575383639.pdfIn PDF document text
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16090e01934504---71303474261.pdfIn PDF document text
    • http://carneslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/23724215821.pdfIn PDF document text
    • https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd9868efcd---17798802404.pdfIn PDF document text
    • http://thuexedanang247.com/uploads/image/files/vigon.pdfIn PDF document text
    • https://unitedcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cf2a9e6e5e---tajafolezedadepi.pdfIn PDF document text
    • https://egca.fr/userfiles/file/ganugapeseluzuxed.pdfIn PDF document text
    • http://sns.hu/_user/file/30417308785.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_off0000d875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD875 11056 bytes
SHA-256: 8e405332ea8321c484e474828cefb10df628c6780c8001f3130ccef297342ce4
font_01_sfnt_off0000f1c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1C2 16740 bytes
SHA-256: c8222aa41776ef386c3c79b36706d4490538700b8efbd4ed001fed601ab7c708
font_02_sfnt_off00011d77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D77 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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