Malicious PDF — malware analysis report

Static analysis result for SHA-256 775b42696f633a46…

MALICIOUS

PDF

62.3 KB Created: 2021-06-30 08:11:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e1df3e1f51c2e7e4a2009fbe9900ab14 SHA-1: 682a5899cce3a01a6172bb0084ff59cf51ea3982 SHA-256: 775b42696f633a463eb14a6328cfebfb19b55539d396ebac2426f43e55f9d405
154 Risk Score

Malware Insights

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

The file is identified as a malicious PDF by ClamAV and an ML classifier. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a phishing or scam campaign. The PDF structure and link farm indicate an attempt to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5915

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://smidgel.ru/uplcv?utm_term=how+does+eminem+rap+so+fast PDF link annotation
    • http://sumtinathholidays.com/admin/uploadfiles/file/solozezagodufejivuseduzok.pdfIn PDF document text
    • http://akicgiyim.com/userfiles/file/14673732261.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/609d6d9e9769e9d6d80d3e53789c9f25/soresalelozakofa.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d4ce7923b9---89082609222.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160a62d84875a3---79270081541.pdfIn PDF document text
    • https://moto-trend.cz/public/files/fck/file/56769533262.pdfIn PDF document text
    • http://richmediahouse.com/admin/uploads/file/72486456497.pdfIn PDF document text
    • http://polymer-optix.de/userfiles/file/46121112947.pdfIn PDF document text
    • http://teranor.com/ckfinder/userfiles/files/66217029925.pdfIn PDF document text
    • http://naszymsladem.pl/upload/file/pufidejixufixumiw.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160840c89819c3---filamakawuvetawosidew.pdfIn PDF document text
    • http://sam-global.info/files/file/46238747156.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/160b3031c8451c---17560828082.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b89ebf4fc9a---betemuketiw.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abb46fded81---94189731628.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084c43a1fb99---58796037632.pdfIn PDF document text
    • https://islandsvefir.is/wp-content/plugins/super-forms/uploads/php/files/e4uqdspc1hrm8qp6pda1pl5hg1/77792676797.pdfIn PDF document text
    • http://wsm.hk/images/uploadfiles/file/81818862448.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/7vjmhob76ib00bfahcpuo143m2/16207632104.pdfIn PDF document text
    • https://holyfamilyhospitals.com/ckfinder/userfiles/files/malowekisisufutug.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be06c69c499---46504225112.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160943fde3385a---vuwos.pdfIn PDF document text

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