Malicious PDF — malware analysis report

Static analysis result for SHA-256 704fed43fab3f53d…

MALICIOUS

PDF

74.8 KB Created: 2021-08-07 07:13:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 7a31bfeb0ba0397fb735b8b2381f773c SHA-1: 1f8e34fb372cf713a687b3e32a5e24c0fa5170a4 SHA-256: 704fed43fab3f53daeeeeabac4c4c072c0bc2691ed364e0e9acc4b379782c855
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for Pdf.Phishing.Trojan. The file contains numerous embedded URLs pointing to compromised websites and disposable hosting, suggesting it functions as a link farm to distribute phishing content or further malware. The presence of these links and the overall structure indicate a likely attempt to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8414

Heuristics 5

  • 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
  • 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://oniceh.ru/uplcv?utm_term=descargar+diccionario+enciclopedico+de+biblia+y+teologia PDF link annotation
    • http://interstroy96.ru/uploads/files/35760208964.pdfIn PDF document text
    • https://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/e4960b81d4e221f50b8a68f1cbf7532c/67823132172.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f0f36ad5e45---54777121948.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/ed03f6bd6a45363242540ed79161ec10/82101437774.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad3feec0f76---jigosijubapuf.pdfIn PDF document text
    • http://gintaras.cz/userfiles/file/45654453979.pdfIn PDF document text
    • http://whuntex.info/userfiles/file/lezutedizadijadadusisomi.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bba3a3a692a---ridunivajusamu.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f10b3a857c---rupanedugajijekiruwofag.pdfIn PDF document text
    • http://aihyang.com/userfiles/file/56051453023.pdfIn PDF document text
    • http://bbfederico2.net/userfiles/file/gizotemogukegexibeki.pdfIn PDF document text
    • https://uniqrelation.com/userfiles/file/nefilafaxanifube.pdfIn PDF document text
    • https://tessuno.com/upload/files/60fb34144eb01.pdfIn PDF document text
    • https://eberli-medical-supply.ch/upload/file/42386773114.pdfIn PDF document text
    • http://diacritic.org/travel/app/webroot/img/files/4789638748.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607d7fa1ae10e---63427852166.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c8cfc945ec---21823931421.pdfIn PDF document text
    • http://project-lovcen.me/userfiles/file/26992233185.pdfIn PDF document text
    • http://hysansam.com/fckeditor/userfiles/image/39051574272.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/ib3jth4crjbf8msh842eouksue/62356466406.pdfIn PDF document text
    • http://werkkledingverkoop.nl/images/docman/files/10748956233.pdfIn PDF document text
    • https://www.cr-sdc.org/wp-content/plugins/super-forms/uploads/php/files/bc240e89f39f4a7f81a42aa1662cd7a1/kivenopitikuzug.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b9c8814b9c4---dugesabavojenokajowo.pdfIn PDF document text
    • http://planetamama.ru/files/file/wubowejiwana.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001065b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1065B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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