Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f6186e1347203f0…

MALICIOUS

PDF

63.7 KB Created: 2021-07-25 12:48:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: a6dbf9eb78bd155a98fcc806d8fd45be SHA-1: 5402018dafa63253c266c41cad4e23ed03d93ed2 SHA-256: 0f6186e1347203f0593614a8772910475fb02b6cd7f7a9062ae336fbf56cd6b1
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The file contains a link farm pointing to compromised WordPress upload directories, suggesting an attempt to host malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9325

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 http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160acf1b1f2d25---xevidajexexarobod.pdf In PDF document text
    • https://eandjfamilyhealthcenter.com/wp-content/plugins/super-forms/uploads/php/files/d984e099383dde131205b32323fa67d7/donajozoxa.pdfIn PDF document text
    • https://celebicatering.com/upload/ckfinder/files/kukobizavemazumunawolido.pdfIn PDF document text
    • https://ewastexperts.com/userfiles/files/5219267663.pdfIn PDF document text
    • http://asea-admin.com/_userfiles/file/20210506165302.pdfIn PDF document text
    • http://xaydungphongphu.com/uploads/files/45445613527.pdfIn PDF document text
    • http://associacaoguainumbi.org.br/wp/wp-content/plugins/formcraft/file-upload/server/content/files/1606fcdc621319---finogojikarafesevafek.pdfIn PDF document text
    • https://a1-recruitment.fr/v2011/Files/fck_upload/file/35540337206.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a504b405559---1926850983.pdfIn PDF document text
    • http://chukgoobok.com/files/fckeditor/file/18628847800.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1607e836ad9531---gabilugavuna.pdfIn PDF document text
    • http://arablift.net/userfiles/file/xunororipebo.pdfIn PDF document text
    • https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ac09d70f43b---rudoparo.pdfIn PDF document text
    • http://autosklo.sk/pictures/file/bovozavelalizenadogu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=new+year+sermon+2021+pdfPDF link annotation

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