Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5a0174d258addc7…

MALICIOUS

PDF

64.2 KB Created: 2021-07-05 12:05:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 8f0b8bd713c7ff8d00966f5b7b9c9ca7 SHA-1: 04d210be43491f7360e4281085f5904e2fe93f49 SHA-256: f5a0174d258addc78dedcec70292cefaa9ab7f230b50d116a0ceb46d6cf7ff68
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is identified as malicious by ClamAV with a Pdf.Phishing.Trojan detection. It contains numerous URLs pointing to compromised WordPress sites and other disposable hosting, suggesting a link farm designed to redirect users to malicious content. The PDF structure and embedded URLs indicate an attempt to lure users to external sites, likely for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3846

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://chcial.ru/uplcv?utm_term=read+data+from+pdf+to+excel PDF link annotation
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/49c4817cf1e1810bc0f09cf9a3db9bf0/kutisogobelenidomupa.pdfIn PDF document text
    • http://c2r-auto.com/uploadfiles/file/2021060723014873499.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/166e0b1e027d3de99a076eaf7f34ed2e/fuwegu.pdfIn PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a3ad6aa0219---varifoveruwadisibonuvedav.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/iqr84sdhss2uagku4g0o3r91sc/jedezonejudixire.pdfIn PDF document text
    • http://firstcuwire.com/file_media/file_image/file/638867560.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1606f726051e69---18837024977.pdfIn PDF document text
    • http://bmhs71.com/clients/c/c9/c97ff408e01126d63256cf68004d6641/File/bunetito.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b7c3e7c73e0---jozarubasewito.pdfIn PDF document text
    • http://industrialdevices.in/uploads/vikunujufudi.pdfIn PDF document text
    • https://magerp.org/upload/files/98143039106.pdfIn PDF document text
    • http://strahovka66.ru/userfiles/file/42140251543.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/e20790bcce5d8f9db9306ddbe955b719/takomoganidikud.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609879d098333---95926924345.pdfIn PDF document text
    • https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/jruk2nb0u17a88r4huts9lu2c8/ravesetobukor.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/f11b68e0766e39365d27b1b5246e0a5c/gakidelogu.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/57321e9312b71fdb677d8f1bd0a4ec92/zupekebu.pdfIn PDF document text
    • http://www.aluvascientific.com/UserFiles/file/74559899768.pdfIn PDF document text
    • http://fenotropil.ru/userfiles/file/ruvuw.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb876d03d07---masoludawaxelobofaj.pdfIn PDF document text
    • https://www.goldenplanet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1607d562317218---88373450943.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/bdd2ab5b4c9435928b87432b3c866dca/31392943061.pdfIn PDF document text
    • https://store-connector.com/_upload_bilder/_filemanager/file/77004064228.pdfIn PDF document text
    • https://turismo-galicia.es/ckfinder/userfiles/files/57306816831.pdfIn PDF document text
    • http://pamat.ro/UserFiles/file/71701402088.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/l1ilu8r82rqrmi6rueqscpkag1/18517953673.pdfIn PDF document text

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