Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2fe47a61f6f8557…

MALICIOUS

PDF

195.5 KB Created: 2021-08-13 04:48:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: cf91711e44d38d68ee44d41b55fab690 SHA-1: c3268b461a8de0770bb900ade794ece147ed99a7 SHA-256: d2fe47a61f6f8557c20ec4490a8c6cd766bdd0e994ac8b2590e5697793a2b2ae
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to distribute malicious content. ClamAV detected this file as 'Pdf.Phishing.Trojan', and ML classifiers also flagged it as malicious. While no scripts were directly extracted, the presence of numerous links to potentially malicious PDFs indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9587

Heuristics 4

  • 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.
  • 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://oknoplus-omsk.ru/wp-content/plugins/super-forms/uploads/php/files/f8d11ad99823e61040fea9ac5ffe2fe6/xuvirifo.pdf In PDF document text
    • http://www.eau-msu.ru/ckfinder/userfiles/files/78319758064.pdfIn PDF document text
    • https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/0d63c4f9d18b08343f40364d9ee3e789/89692881309.pdfIn PDF document text
    • http://alexandercdg.com/clients/36029/File/65487463106.pdfIn PDF document text
    • https://hogies.com/includes/template/uploads/file/konibisibax.pdfIn PDF document text
    • https://kildevangen.dk/files/bewegujivudapamugu.pdfIn PDF document text
    • https://moma-restaurant.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c552ada0a3a---taralu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c07942d070---24633265962.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/bc37e2467bf774745e29f536f6bb3c39/68140713597.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/160e574789c716---64534873386.pdfIn PDF document text
    • http://tinhdauvietnam.vn/upload/files/9074604744.pdfIn PDF document text
    • https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cfdd390b3af---pepopepelij.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/74v0in1au7jot97t4sebv8d0f1/17455002805.pdfIn PDF document text
    • https://thefertilizerequipment.com/d/files/dezogawikegugulinepo.pdfIn PDF document text
    • http://garderoba.sk/images/_file/sipekomasuxot.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608064e5532cd---tixerukukudenadotawabit.pdfIn PDF document text
    • http://shethof.ch/cgi-bin/dynamisch/file/20236747282.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609510d19c859---zamazezetibegidow.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb213edee6d---39323282747.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa0819b32f---51877665380.pdfIn PDF document text
    • https://wrd13.com/force/file/kiroxuzazezosenogek.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=what+are+the+main+differences+between+catholicism+and+lutheranismPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002c8a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C8A6 11060 bytes
SHA-256: 9f3168d997132b9977115484875bf07336a1f132d9b9663b2b2d644a1558acc1

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