Malicious PDF — malware analysis report

Static analysis result for SHA-256 556118ebfcfe8937…

MALICIOUS

PDF

59.5 KB Created: 2021-07-07 22:42:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: be0199671c8d86a7888f5387bae7cf07 SHA-1: df979f8224adfea8cae9a81ca2e0094b3ca63836 SHA-256: 556118ebfcfe8937afa3595c05e87e3b5d423abb1e3df433856c4d98be32fc8c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links pointing to compromised WordPress upload storage and other disposable hosting, suggesting a phishing or malware distribution campaign. The presence of external URIs and link farms indicates an attempt to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6161

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://irlanc.ru/uplcv?utm_term=section+28+mental+health+act PDF link annotation
    • http://bertrandetgastineaudesigners.fr/userfiles/file/24893575391.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be2a4210803---1295130573.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/juwaju.pdfIn PDF document text
    • http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/lavojebatikase.pdfIn PDF document text
    • http://traditionsradio.com/wp-content/plugins/super-forms/uploads/php/files/f033meoecm2ugujpo6okknbsa7/59753166991.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b55c2a9dbcd---96008328563.pdfIn PDF document text
    • http://bualuang101.com/backoffice/upload/files/solibobezunoxala.pdfIn PDF document text
    • http://www.lentilles-progressives.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16076ad87c9d37---32988799246.pdfIn PDF document text
    • https://daquin-ferriere.fr/userfiles/file/geposesiminikoturotefuf.pdfIn PDF document text
    • http://sanarina.de/ckfinder/userfiles/files/safaposofez.pdfIn PDF document text
    • https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098fd99a25d4---66264878615.pdfIn PDF document text
    • http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ada0ae09dc4---5898582533.pdfIn PDF document text
    • https://sp-pir.ru/wp-content/plugins/super-forms/uploads/php/files/6b98b62ca0902dcc24ad2d1f420d492a/85817869292.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/f575372c87db1c5a99d0083d4ce4947f/worujuwanux.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f03bf35419---58145278523.pdfIn PDF document text
    • http://lichnyiybrand.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160960dba8214a---45766463066.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/5c520528569445347a253225f990b9ec/73910157499.pdfIn PDF document text
    • https://cr2tek.com/userfiles/Proj_Name//files/73017570277.pdfIn PDF document text
    • http://conwaychristian.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b477bbea8f9---75239024982.pdfIn PDF document text
    • http://villa-carlshorst.de/sites/default/files/file/fanimesatojexiveg.pdfIn PDF document text
    • https://abhimaninteriors.com/ckfinder/userfiles/files/bigumup.pdfIn PDF document text
    • https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/030mpbr432euke2aj4n67e74bv/19140149584.pdfIn PDF document text

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