Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa32ea66122dda7…

MALICIOUS

PDF

66.5 KB Created: 2021-07-22 09:33:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: bfa5a8255e949a16330d87196394c0fe SHA-1: 0505793f5628e2f5c40d421953010acc1c8a28cd SHA-256: 7aa32ea66122dda73872127842dcca662b997a832a4ea5e087a48471825aa29c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories and other potentially malicious sites. The presence of external URIs and link farm heuristics strongly suggests an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8802

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 http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8fd3bda6b---jivomivar.pdf In PDF document text
    • https://www.pharmaright.ca/wp-content/plugins/super-forms/uploads/php/files/1hik131uosb9ct23rrco58d06n/27842777174.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a8c7115df2c---nipudokuziketitemerod.pdfIn PDF document text
    • http://apsara.ru/userfiles/file/kepizomiguzamunixesex.pdfIn PDF document text
    • http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1609f1ccbba4f9---99135109696.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/k2mnctvrbfddc73u7b26ofsfg4/63749419395.pdfIn PDF document text
    • http://tsradviseurs.nl/mailing/images/photo/file/fedupowaxagaliwopef.pdfIn PDF document text
    • https://prtl.pl/userfiles/file/ravevitagomejofupuz.pdfIn PDF document text
    • https://jjmassociates.com/wp-content/plugins/super-forms/uploads/php/files/5c7bf2c8133070bf933f5df13718b166/wuzipewikoxidoku.pdfIn PDF document text
    • http://turagent007.ru/userfiles/file/47575073236.pdfIn PDF document text
    • http://nowyhotelik.pl/userfiles/file/12459034858.pdfIn PDF document text
    • https://implant-drill.com/userfiles/file/58571165616.pdfIn PDF document text
    • http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085990c00d7d---47685028286.pdfIn PDF document text
    • https://stakeoutllc.com/wp-content/plugins/super-forms/uploads/php/files/053282570a7d4f9dadd45fe862eafafa/zujirupiban.pdfIn PDF document text
    • https://binarbaidtrading.com/public_html/userfiles/file/jufufixekekiduwupixasuliw.pdfIn PDF document text
    • http://rickgrisolia.com/userfiles/files/25582009218.pdfIn PDF document text
    • http://paradisoseminatrici.it/userfiles/files/purosamiw.pdfIn PDF document text
    • http://lumieretvie.com/userfiles/file/loteludopebu.pdfIn PDF document text
    • http://villaelen.it/userfiles/files/warezofarogolike.pdfIn PDF document text
    • http://mid-europe-ex.com/images/blog//file/90217339168.pdfIn PDF document text
    • https://medprobr.com.br/wp-content/plugins/super-forms/uploads/php/files/c43550a79f9a11b710ab238a95b479f7/guraruz.pdfIn PDF document text
    • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/cdb87cee6310ea48ffdf1b11add520c9/96505934385.pdfIn PDF document text
    • https://baxsporthorses.nl/userfiles/file/nezajekafetozorumolu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=fishing+clash+free+coinsPDF link annotation

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