Malicious PDF — malware analysis report

Static analysis result for SHA-256 beecb5f70dcb269c…

MALICIOUS

PDF

70.6 KB Created: 2021-06-10 21:37:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: ef2ad2680a5c6f822ceddc046cebc467 SHA-1: 2609cbebb19aefcefa34cbad39a93083e5203312 SHA-256: beecb5f70dcb269c2fce824ad2216fb146e2a94c40925024e4402d068a20eab3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of a URL with 'activate office 365 kmspico' strongly indicates a lure for users seeking software activation, a common phishing tactic. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9678

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://crysiq.ru/uplcv?utm_term=activate+office+365+kmspico PDF link annotation
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/e5357b29142d94253dbd987108c5909f/seneka.pdfIn PDF document text
    • http://imi.vc/upload/files/17623887743.pdfIn PDF document text
    • http://peaceinsrilanka.lk/userfiles/file/65696348062.pdfIn PDF document text
    • https://forkidsvietnam.vn/wp-content/plugins/super-forms/uploads/php/files/0ta4tp0gknicl39uj7vf0sq67m/difufusik.pdfIn PDF document text
    • http://selfmadefilms.nl/userfiles/files/sosesovojugop.pdfIn PDF document text
    • https://geniodelweb.com/file/56547458019.pdfIn PDF document text
    • http://ccforum.kr/uploads/file/1622745510.pdfIn PDF document text
    • https://soba05.org/wp-content/plugins/super-forms/uploads/php/files/c8450e1c0be7f19e5b8267b7f29a80c5/xalupojorujexovoxosu.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/7f80eed7ea8644b690771852486b831b/53034787303.pdfIn PDF document text
    • http://mobilephleb.com/clients/2/2d/2d2188d13063160162e6e2bbcdac547d/File/buzojojibeponatol.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d7cd36b972---kijegavemiziravu.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e89e7a55a5---vakuranatugebekovogupiwa.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160a87fff2a5b2---52111396651.pdfIn PDF document text
    • https://betonwerkendejonge.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607f73032fb48---51770052945.pdfIn PDF document text
    • https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/91990ca302a249e2b46073234b9f2aa9/fazisepima.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/53f01q6ci63u84t6sp39tib111/mukanabexu.pdfIn PDF document text
    • https://lamaisonducoeur.ca/upload/editor/file/49410064374.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e25a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE25A 5588 bytes
SHA-256: 64f96a1020ca9b274a4c83c780aca363c68626c281b2826224d8bc5ac424ef03

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