Malicious PDF — malware analysis report

Static analysis result for SHA-256 db4dd03b7bd4e7a4…

MALICIOUS

PDF

73.1 KB Created: 2021-08-28 04:14:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: e74afb220527cad83784065aa3d2ba17 SHA-1: 83c99510eacd7dd96418c0951968984a69db7d7f SHA-256: db4dd03b7bd4e7a49774bba66dd1dd63bcb65fa97ea6c9a42a8cd39aa4b74b46
156 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, indicating it is likely a phishing or malware distribution lure. It contains numerous links pointing to compromised websites, suggesting an attempt to redirect users to malicious content. The presence of multiple links on disposable hosting further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9840

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 http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/d2hdhvv8v7fejsj322nn24erm5/vugepinelezerewo.pdf In PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096795ce98b4---93369011242.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/dfbdd4212316e69073548c592740db44/judalozepubajujodige.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160d8fc2c6ab20---27904223204.pdfIn PDF document text
    • https://castilloexterior.org/ckfinder/userfiles/files/74511173140.pdfIn PDF document text
    • https://malimbe.africa/wp-content/plugins/super-forms/uploads/php/files/940ffc078b2a0aadd03c6e8c218ed9c2/kotidoruduxukovasoletumu.pdfIn PDF document text
    • http://dungcubepgiangtrinh.com/webroot/img/files/woxadosubo.pdfIn PDF document text
    • https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/ba25be8f5350137844cf71eab40f2fd0/sebotevikelepimum.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/c1e17a0070c0f9b2b0af1308e42d4a99/67690844074.pdfIn PDF document text
    • http://cdmatik.com/uploads/file/16794365026.pdfIn PDF document text
    • https://zippy-inc.com/app/webroot/userfiles/files/bafadasipozuxa.pdfIn PDF document text
    • http://mulroyenvironmental.ie/userfiles/file/tasezomelasuvijizutazoj.pdfIn PDF document text
    • http://occahomesearch.com/userfiles/files/xobavodaxexuxuwidosupuk.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16123acedad0b6---pujosez.pdfIn PDF document text
    • https://menlopark.com/wysiwygfiles/file/40413973893.pdfIn PDF document text
    • http://www.fan-consultants.com.tw/ezadmin/ckfinder/userfiles/files/gelop.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/sudov.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/28183502463.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/52ed6029147222b06c55c36ae6bfab11/36023704055.pdfIn PDF document text
    • http://barcabianca.eu/upload/file/najixepimigel.pdfIn PDF document text
    • https://www.groupenahno.com/wp-content/plugins/super-forms/uploads/php/files/auribiv5d8adqge2sa9jkc8qrr/10028775452.pdfIn PDF document text
    • http://hifitness.hu/userfiles/file/metafovewoxabuwafowejapav.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/e096ba7bf731cba2ff49e0889173a09f/8973315970.pdfIn PDF document text
    • http://www.anjhimayath.com/upload/file/87687393978.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d06ebb4e7---51471605289.pdfIn PDF document text
    • https://earplighting.com/wp-content/plugins/super-forms/uploads/php/files/a58e21076aed8d39561b413692cc0ba3/goduvawivirikelokobad.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=cataclysmic+events+stressorsPDF 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_off0000bd5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD5B 16264 bytes
SHA-256: bff1e7daace5814cada6cf9bf3c834a898bee626b4c0a13b4f4967ed9b1fcd60
font_01_sfnt_off0000e69b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69B 10604 bytes
SHA-256: ec615a62a56de4d6ffc5abd902603612b7b4cfb717a7ce1683b45fb189438d70
font_02_sfnt_off0000fee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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