Malicious PDF — malware analysis report

Static analysis result for SHA-256 f4960f906df34576…

MALICIOUS

PDF

86.2 KB Created: 2021-09-04 17:31:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 26985831b9623c425e708136002c5998 SHA-1: dabcf2c8ae5e5345ab38b21e834b207b4f172182 SHA-256: f4960f906df34576ca2855f9784d81a9c2d2022de1aa47b13de74b645dd51941
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to compromised WordPress sites. These links are likely intended to lure users to malicious content or phishing pages. The ClamAV detection and ML classifier further support its malicious nature, indicating it's a phishing or trojan distribution mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7170

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://www.capitalroofingct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8eb8117c96---99675578573.pdf In PDF document text
    • http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161000573cbc4b---jofaku.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/a5328eb03cca7dc3a8661350a4553b15/80026455821.pdfIn PDF document text
    • https://hantverkarenisandby.se/UserFiles/files/fekobesugavizurov.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/87c8cf59d8d2be9fa9cb284a4a6cbb9a/bitifolesusivojovabogidal.pdfIn PDF document text
    • http://dioceseofniranam.org/userfiles/file/66005616397.pdfIn PDF document text
    • https://binarbaidrealestate.com/public_html/userfiles/file/fosigajatuwezu.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba53fd1973---23393252905.pdfIn PDF document text
    • https://burragebrothers.com/demo/jolie/beta/userfiles/files/21584918976.pdfIn PDF document text
    • http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094bcbdea6dc---xafex.pdfIn PDF document text
    • http://adhdesign.de/userContent/files/20210706174758-duwunuvelokutuv.pdfIn PDF document text
    • http://businessplan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/77330355690.pdfIn PDF document text
    • https://synodradomski.pl/userfiles/file/navemukapifolaxoperunajez.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160867fd4a7893---90121105711.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/160e937cb41e53---57951608373.pdfIn PDF document text
    • https://incoyun.com/calisma2/files/uploads/zerabanizeradoxoxibik.pdfIn PDF document text
    • http://atdawnwelift.com/userfiles/file/gelemovojorozuboz.pdfIn PDF document text
    • http://sitoad.com/bbqjoekey/files/202106091736549295.pdfIn PDF document text
    • http://fzsvybbs.at/userfiles/file/rudiwasemaxisate.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/ca8f07acdae29a6a89e4d91bf29f4e83/30580009414.pdfIn PDF document text
    • http://herningbadintra.dk/app/webroot/upload/files/53086236055.pdfIn PDF document text
    • http://digimaap.com/wp-content/plugins/super-forms/uploads/php/files/d0bntjehijei3o71cbpr7au0sn/95807239165.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/32d7343c2abe337f48bc5f15b06c0369/gaxatofaj.pdfIn PDF document text
    • http://jinistudy.com/_UploadFile/Images/file/40321634679.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=transportation+engineering+2+pdf+notesPDF link annotation
    • 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_off000127ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127EC 19036 bytes
SHA-256: 46d28d67ba81a700d0b9d8e8ab5c567f6bc18e07b354ebe2f1ce653999c607d2

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