Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dd6902e285fe6f5…

MALICIOUS

PDF

62.3 KB Created: 2021-06-22 14:00:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 765ccda90baa1ddc688a5e68cec647d0 SHA-1: b718a315a9fe2044a107362e79e73468cbe6d840 SHA-256: 2dd6902e285fe6f52445f2789ff48fafc8fc965b74e4f77ec58e60f7b2c09167
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a phishing or malware distribution attempt. The ClamAV detection and ML classifier further indicate malicious intent. The document body, though heavily obfuscated, contains references to 'strategic relocation 3rd edition pdf' and 'wkhtmltopdf', likely serving as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7196

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://synerhu.ru/uplcv?utm_term=strategic+relocation+3rd+edition+pdf PDF link annotation
    • http://miamiwars.pl/wp-content/plugins/super-forms/uploads/php/files/633d803d66e0463a13aea91bd5ec0b01/wumunufobivatisugiv.pdfIn PDF document text
    • http://karthikeyanjayaram.com/userfiles/file/kaxoxiwevuxabavosunefobu.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/d0c3d69cc82b323638da7ddcf951b767/74605927970.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160819be89f680---93975607767.pdfIn PDF document text
    • http://moyamoya.center/images/hand_uploaded/files/60273731905.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/d5951fd8940a477d7d5fb14b23cb8871/libudosu.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/1e7084f84471d08c1fab1c8a30771056/fobap.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb29b497bb---7503597579.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/2cd3f814189ace8fc6a7ba24094b58ab/98377661983.pdfIn PDF document text
    • https://gastrotest.co/ckfinder/userfiles/files/45878924023.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/aa28fdf5cfbd8e554f5920df1a2ae81d/38815079276.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608704e0cc1e8---jodirozam.pdfIn PDF document text
    • http://www.shipsupply.co.mz/wp-content/plugins/formcraft/file-upload/server/content/files/16082c66ff3228---6567673236.pdfIn PDF document text
    • http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/slsqkkm611tleb80n1ac7ul6i0/74418056792.pdfIn PDF document text
    • http://ljhalls.com/wp-content/plugins/super-forms/uploads/php/files/923ad3ee266ed5adf516b12e7a865e8c/lirinubep.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1607eff54db4c9---ludipuwafetimivopoxaga.pdfIn PDF document text
    • https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160953d4856ee3---83645798827.pdfIn PDF document text

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