Malicious PDF — malware analysis report

Static analysis result for SHA-256 7049aa6c83612631…

MALICIOUS

PDF

66.5 KB Created: 2021-09-04 19:56:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: def486239487ab22989ecc9c178f0ec8 SHA-1: a0f78b056f6b1ed966b68f53420e8c9f25a513b0 SHA-256: 7049aa6c8361263144f0b5bdbeb777a39791ae5ba21b6fb2d95b5e805f780cdb
154 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting it's designed to distribute further malicious content. The embedded URLs and the nature of the heuristics strongly suggest a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7982

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://accountingworld.in/singhania/downloads/file/bazadonale.pdf In PDF document text
    • https://bloc-immo.com/images/65005617635.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16084415f53342---43194166956.pdfIn PDF document text
    • https://lmbri.com/WYSIWYGImage/file/kafukubatoras.pdfIn PDF document text
    • https://expungemyrecordnj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac12166ac90---62170813865.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160c88974a9d69---47359886727.pdfIn PDF document text
    • http://www.alborada.es/ckfinder/userfiles/files/22058895598.pdfIn PDF document text
    • https://mithermomix.com.mx/wp-content/plugins/super-forms/uploads/php/files/ba7ee9bb03b1ffeb1dc6daee7bfff8f0/nijogejubogadosijikisebu.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/38620bb3d03e310554afb2ca12eb6601/49236239609.pdfIn PDF document text
    • https://samarpanbharat.org/trila/userfiles/file/sanot.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16105b6ffe0929---vamepefibukutovazenuza.pdfIn PDF document text
    • http://xn----otbb6ahq3d.xn--p1ai/ckfinder/userfiles/files/8288430276.pdfIn PDF document text
    • https://calmoinc.com/upload/editor/file/lomofavasolaluga.pdfIn PDF document text
    • http://alexsrmenchion.com/clients/b/bf/bf5401b25fe3457642f5a6f1150d5537/File/19576909423.pdfIn PDF document text
    • http://cdmvt.cz/sites/default/files/21593531865.pdfIn PDF document text
    • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/160836ae9a93a2---motazajosupukawexukezib.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1607aae6303ace---zaretezajaru.pdfIn PDF document text
    • https://giltmorestukko.hu/ckfinder/userfiles/files/72479083351.pdfIn PDF document text
    • http://baobiachau.com/luutru/files/butonobetozizipojerom.pdfIn PDF document text
    • https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/50b1829edab1e5fb8ddb5d51db87efa8/jesunisabazedogon.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=puranas+in+kannada+pdf+free+downloadPDF link annotation

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

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