Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e79fbcd8dc57436…

MALICIOUS

PDF

134.3 KB Created: 2021-06-12 07:11:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6e8d9f601fcb982c262616c52f962059 SHA-1: 52aa21ba297a0f7818808093a6c6ff8fdfc53cbd SHA-256: 6e79fbcd8dc574363bd7046e729c0b389fe02d485a7bade7d4e0e18451228fba
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm pointing to multiple compromised WordPress sites, likely intended to distribute malware or facilitate phishing. The heuristic firings indicate a high likelihood of malicious intent, with ClamAV specifically identifying it as a phishing trojan. The embedded URLs and the nature of the link farm suggest an attempt to trick users into downloading malicious content, possibly disguised as legitimate software like VPN applications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8076

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://wastran.ru/uplcv?utm_term=tap+booster+vpn+apk+download PDF link annotation
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160701d7d8756a---ropumi.pdfIn PDF document text
    • http://hy-concrete.ru/d/files/setepojajufoxeluge.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/56603ee473e514eb0bf46f96553923aa/tipevori.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/17ce10a3a75884f3b73f1986a7cdc3f1/wawig.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/8accb9d36258809c9e972df6e17585e0/43252835990.pdfIn PDF document text
    • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/h6tbb8hl5l3t52b21kpph2n75v/vikonetixipegesoso.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/72357408973.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/608b3e40b003715c292626a6a0049076/tanifidowugirija.pdfIn PDF document text
    • https://agatanorek.com/files/file/67470067334.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/5tphcoubi38ul35ubtea1g5c15/21946984577.pdfIn PDF document text
    • http://tanriovermensucat.com/uploads/genel/files/mekopurerigagezivotuk.pdfIn PDF document text
    • https://bahia-group.com/ckfinder/userfiles/files/nedigago.pdfIn PDF document text
    • http://sungsam.net/userData/board/file/67155093610.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608f5b61d5076---nifurijuditimuduki.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/vkfs39nvub3dmemo36tahtlp1h/jobugivulodatopewavojurug.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abde8709253---juligusapujitegisakami.pdfIn PDF document text

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