Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d1b9df0a9f48212…

MALICIOUS

PDF

93.9 KB Created: 2021-05-23 16:57:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73e48b519c401feab280125ae0c78d7b SHA-1: 4b01a1e999753022fff9c8df5d87f2fe9f85ec59 SHA-256: 4d1b9df0a9f482124b4c292ddf29606d6ec6ac87f6a4c1d86de080cd07336b3c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It functions as a link farm, directing users to download files from compromised WordPress sites, disguised as a Bible commentary. The presence of numerous links to potentially compromised CMS upload directories indicates an attempt to distribute further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9711

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 http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607430fe514c2---92037432906.pdf
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075e0b22189c---95537017243.pdf
    • https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160929bb849200---38212088014.pdf
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079305a1a183---91743346415.pdf
    • http://akcjonariusz.com/UserFiles/file/27040619136.pdf
    • http://benardoutlite.com/admin/fckeditor/fckdata/file/85553912472.pdf
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160963f896aeb3---69497610027.pdf
    • https://www.alpha-dynamics.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160745af843cd6---toriponi.pdf
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609560c428da0---99110533077.pdf
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a601549e12---41196789773.pdf
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608abd050bacc---xojawuxevinetalamowedadax.pdf
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/2ec7c8e442a440ace0a5df5ef35dfdf5/tukeziligex.pdf
    • http://mfplus.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16085eae6789e9---dexekepilapabigo.pdf
    • http://zabradli-znerezu.cz/userfiles/file/migemekufofamufab.pdf
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/ekod6ji9j2su2gfh3b0jmgmefp/vowoxasugaruno.pdf
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16075defb92157---magusivogo.pdf
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/3514ef00756f95dd7be21928c93f2bf4/sowipixavufefudakepisej.pdf
    • https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/0alsm3h3uikca3gnvfkslhj91o/86577194745.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=roman+catholic+bible+commentary+pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00016824.bin
8c0c6bce499e56a7ec673b78da8e724d2c064a2cecb13c924fb97f05f2e41aa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x16824 5464 bytes

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