Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ebb5c52b8ce23af…

MALICIOUS

PDF

89.4 KB Created: 2021-07-05 06:25:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: 36250f05605287a1f3b69d0d61843f09 SHA-1: 3d047c70eff3e2fad4bba441fbea9a0587ca9a7c SHA-256: 7ebb5c52b8ce23afff0b7044c5a244bceb341cae292b1e6e9b05236b70603f17
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains a link farm pointing to compromised CMS upload storage, suggesting an attempt to distribute malicious files. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway scanning.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/790e197394ccabfa449ceff39c0d70b1/junubezoremini.pdf In PDF document text
    • http://brandnewgoods.net/userfiles/file/risekizazubepogapafovow.pdfIn PDF document text
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/03e543d8fb42379f558ff164d1329e04/23914459142.pdfIn PDF document text
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/b7ab8d495c1c2dd51d102e5244ff4315/kolutuxe.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160989ee057af9---kizumujujabasovako.pdfIn PDF document text
    • https://ketdoanbus.com/webroot/img/files/xinadefitewolalomuv.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/hs7uk2bds6nmkgntajfdesa8c5/bupesurulefujadejew.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/160da054c266ca---46574921177.pdfIn PDF document text
    • http://logiccpacma.com/ckfinder/userfiles/files/17626496993.pdfIn PDF document text
    • http://sam-global.info/files/file/sixuwexoruwurewotiwob.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/mpkfklhvnnplp6p7a07bkechf0/83124539380.pdfIn PDF document text
    • http://vietxetai.com/wp-content/plugins/super-forms/uploads/php/files/gt3d4bp0ul4k1uq7bo8paekrjo/47314684742.pdfIn PDF document text
    • http://hoanhaochemical.com/uploads/files/61774520847.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160882ab204521---woluxetelipereduva.pdfIn PDF document text
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/160805b9f6ddb7---80735592799.pdfIn PDF document text
    • http://jkmdc.com/aversystem.com/userfiles/file/33979108728.pdfIn PDF document text
    • https://parquesanalbertohurtado.cl/ckfinder/userfiles/files/zijafi.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/160741bd221b5a---98948836887.pdfIn PDF document text
    • http://93564497.com/userfiles/kefuvivozaguvi.pdfIn PDF document text
    • http://kameleonhastanc.hu/files/file/76580063181.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/5d00c98e6d35e53fc089b5cbd64826e3/74616260923.pdfIn PDF document text
    • http://deurenhanger.nl/userfiles/file/kogiju.pdfIn PDF document text
    • https://brokenspoke.com/wp-content/plugins/super-forms/uploads/php/files/54a687fbc9c79c2fbbf7b56ccad0aee1/funidotak.pdfIn PDF document text
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/25a1cfce78b0736bd8c605ec5479e94a/78429332868.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/8559333563eac888664153fa77a161da/52633918481.pdfIn PDF document text
    • https://lasanisports.com/files/pajobok.pdfIn PDF document text
    • http://irishvaughans.com/clients/7/7c/7cfe0b8ff6d5e3136a6575a9b258a09c/File/timokelezozisiguvutut.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=supply+and+demand+worksheetPDF 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_off0000f7d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7D9 17700 bytes
SHA-256: aa4adc5ed9e6fb7de661ff22435a08cee402445b9d903cb6ce2d5b9c25482aec
font_01_sfnt_off00012637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12637 11032 bytes
SHA-256: 16309093b6e3d4134b7ac20f66616a728c97c11994f71ba0df5ad2f68a391c54
font_02_sfnt_off00013fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FD0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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