Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffe96a9ff2a94597…

MALICIOUS

PDF

51.2 KB Created: 2021-09-12 13:10:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 8ef07c8d4157823b29e7195a637464e3 SHA-1: 75d2e64e52fbca7aab33bced573636acefa7b099 SHA-256: ffe96a9ff2a9459717e2ec0679de6dc4bc2fcc2466468443f2587b50bce7fcb9
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to various domains, many of which are hosted on compromised WordPress sites or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of external URI heuristics and link farm indicators suggests the document's primary purpose is to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6164

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://irlanc.ru/uplcv?utm_term=street+workout+program+pdf PDF link annotation
    • http://xn--zb0by3yusal20ak5lcidnwigi.com/ckfinder/userfiles/files/1631358339.pdfIn PDF document text
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/a66a426ebfd580b855abe74bf2761a08/xovoreduvogigiweku.pdfIn PDF document text
    • http://meetburgerusa.com/uploads/files/dafosutasemufemojifen.pdfIn PDF document text
    • http://chemonova.com/FCKeditor/file/78230657811.pdfIn PDF document text
    • http://motopujcovnateplice.cz/userfiles/file/52232254954.pdfIn PDF document text
    • http://uhorder.com/upload/files/68604967857.pdfIn PDF document text
    • http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/161379289e4a0e---tuzikejisigojekalemudex.pdfIn PDF document text
    • http://amsaneeraus.fi/userfiles/files/17586197535.pdfIn PDF document text
    • http://fujavietnam.com/images/Download/lukajolupepebusalowufeso.pdfIn PDF document text
    • http://studiovalentini.eu/userfiles/files/puxerifiduzejisurumiguj.pdfIn PDF document text
    • http://shopcloud.cloud/ckfinder/userfiles/files/58756558169.pdfIn PDF document text
    • http://stickerbarcode.com/file_media/file_image/file/65955111940.pdfIn PDF document text
    • https://xn----7sbeo1acdy3adh.xn--p1ai/userfiles/file/42444728394.pdfIn PDF document text
    • http://bbhshipyard.com/userfiles/file/87255263757.pdfIn PDF document text
    • https://ijaetis.org/ckfinder/userfiles/files/78685541260.pdfIn PDF document text
    • https://freedomtampons.com/wp-content/plugins/super-forms/uploads/php/files/7a5518d3a84f213faad8ad5c678d37f9/57209588404.pdfIn PDF document text
    • http://vitali-schulz-eiskunstlaufen.de/userfiles/files/jegusisiselosewuvidem.pdfIn PDF document text
    • http://badischer-kunstverein.de/ckfinder/userfiles/files/timapab.pdfIn PDF document text
    • http://onelove.cz/file/tujorob.pdfIn PDF document text
    • http://bluebossa.pl/files/file/sorafu.pdfIn PDF document text
    • http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138fecf90fbb---1553281924.pdfIn PDF document text
    • http://thumpamonpally.com/userfiles/file/kutozitelotokuxinaki.pdfIn PDF document text
    • https://afanasyev-design.ru/wp-content/plugins/super-forms/uploads/php/files/05a7256ab003de207bf91829eb0d5786/81884331784.pdfIn PDF document text
    • https://ritascreation.com/userfiles/file/82894964179.pdfIn PDF document text

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