Malicious PDF — malware analysis report

Static analysis result for SHA-256 07edb3ed79b96290…

MALICIOUS

PDF

51.2 KB Created: 2021-09-04 14:44:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: be2f296b85f6d493980d20ec04d5fe90 SHA-1: f928821481d6931ed4ef9bb90fe3da1eb990af9e SHA-256: 07edb3ed79b9629073fe56b5eebb2c8a43a8f06cf9a942704c830bc67ce321e9
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to multiple domains, many of which are hosted on compromised WordPress installations. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document body is heavily obfuscated and unreadable, providing no further context.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8037

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://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160797a247b1fc---lawinadi.pdf In PDF document text
    • https://cambodiadriverservice.com/userfiles/file/18152957571.pdfIn PDF document text
    • http://jp-cable.com/d/files/98997635680.pdfIn PDF document text
    • https://tamphuctriland.vn/upload/files/pijejidudinofurizuzi.pdfIn PDF document text
    • http://thefjordbaklawfirm.com/clients/876731/File/99931041210.pdfIn PDF document text
    • https://keralatemples.info/ckfinder/userfiles/files/giwenafagukulaledasu.pdfIn PDF document text
    • https://www.focus.mu/wp-content/plugins/super-forms/uploads/php/files/d37baea54799afa384ddecc7ec9507aa/buxotinizowijutonetogab.pdfIn PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/d785d4fa60c77c1c30e62197bc1c0c67/89970295335.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/j80vn7vob19veo9ubqklah59rr/94049214847.pdfIn PDF document text
    • https://www.lindopoint.it/wp-content/plugins/super-forms/uploads/php/files/b8a4eee94e976b07426de79b3fec725c/31716724000.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d6c5a01fef4---lupakumiruridizagebibopab.pdfIn PDF document text
    • http://tovicetour.com/FileData/ckfinder/files/20210605_48DE7355A52EECC3.pdfIn PDF document text
    • http://hiddenforrest.net/clients/76790/File/16515388929.pdfIn PDF document text
    • http://deurenhanger.nl/userfiles/file/zixedi.pdfIn PDF document text
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/76ef0c521af9e38517dcf1913d49e15b/66902398883.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160739aef6d1c7---20262804859.pdfIn PDF document text
    • http://pansophers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160961ccd453fa---84870838304.pdfIn PDF document text
    • https://hopadive.cz/ckfinder/userfiles/files/fitegorufojapesutuzogat.pdfIn PDF document text
    • https://www.gml.de/wp-content/plugins/formcraft/file-upload/server/content/files/16092eb92259a0---44902785774.pdfIn PDF document text
    • https://frigosztufi.ro/ckfinder/userfiles/fiIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=numeros+em+ingles+de+1+a+1000+por+extenso+pdfPDF link annotation

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