Malicious PDF — malware analysis report

Static analysis result for SHA-256 088b63d20ae297fb…

MALICIOUS

PDF

66.4 KB Created: 2021-08-15 12:09:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 94810600f4358dede8b372764799bb1d SHA-1: 2d28539f8f75e2ff34f8c5b55c0076549f6e4c85 SHA-256: 088b63d20ae297fbf7e57cb12cb5754549571b7ccb2dc34419c74b67e6fc1e0a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous links to external websites, many hosted on compromised WordPress installations or disposable domains, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the nature of the heuristics indicate an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9498

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://cructi.ru/uplcv?utm_term=solution+advanced+student%27s+book+key+pdf
    • https://kclandscapes.com/ckfinder/triplebuserfiles/file/dadube.pdf
    • http://kleinschaden.expert/userfiles/file/15264409704.pdf
    • http://xn--pr3b03lcdvwu9dpynqkc.com/DATA/file/20210729231858.pdf
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/633bb48af70dfb39dbb717714a1a96a4/33145930401.pdf
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160fc0a725c42b---90904716803.pdf
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607585f404a8a---vejabibofifonexebusip.pdf
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4fb1149dfe---bexonaloxum.pdf
    • http://teraval.cz/res/file/gufokanigitogebutofaxo.pdf
    • http://tpdw.pl/userfiles/file/kinafemokoxuzutenuvex.pdf
    • http://woodbridgeabw.com/uploads/files/pufamoguloxifodusofuwesi.pdf
    • https://ifbscalidad.eus/files/galeria/files/66397545565.pdf
    • http://wirtrauenuns.ch/images/file/nalipowinamiri.pdf
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a4b14394ae2---ziriv.pdf
    • http://proxima-design.cz/files/file/lodaxajali.pdf
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/16089853a000cf---51506690428.pdf
    • http://www.gametimecatering.com/wp-content/plugins/formcraft/file-upload/server/content/files/160857d0c63773---xoxerunugezaxa.pdf
    • https://voicelux.ru/wp-content/plugins/super-forms/uploads/php/files/dc67a75b4893b77f4fc440f1b48c9930/19364699694.pdf
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16072cd9e839bb---70049830680.pdf
    • http://ping-property.com/user_img/files/lug

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