Malicious PDF — malware analysis report

Static analysis result for SHA-256 80bdec3c33eedc1b…

MALICIOUS

PDF

60.0 KB Created: 2021-05-15 17:37:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c093df496a633459fb7dfc9149c74822 SHA-1: 7b3e5d093138be4567d6a85188f4800230fe5fc3 SHA-256: 80bdec3c33eedc1bbffb6f0599d7a4de2e5e6ee6d8b52b21c3ea447b4e72fdaf
124 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to compromised WordPress sites, likely serving as a link farm to distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URLs suggest a phishing lure designed to trick users into downloading further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7927

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 http://aiswaryamatrimonials.com/fck_uploads/file/gikidokegixo.pdf
    • https://aspaeng.com/files/image/files/77085118641.pdf
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ccdf05995f---muzerukitu.pdf
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc962af5ab---gesugizelodit.pdf
    • https://www.mozartcantat.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160946f8f03f8c---1230238226.pdf
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd0b9bb212---faludidozag.pdf
    • http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160822304487a0---faxaperovu.pdf
    • http://www.blackhillsdancecentre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607730dd54eb2---25985715515.pdf
    • https://carthink.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f67cb5e443---47917415605.pdf
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/fb7fd56802906fc9381ddebe0b9177e6/mudawawebunaguzurulunele.pdf
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/1607270053f42d---12625320002.pdf
    • https://polskieplytki.com/wp-content/plugins/super-forms/uploads/php/files/266947c66ff6e6b3a4d7665b835edef9/6946974127.pdf
    • https://ludifrance.fr/userfiles/file/wetimububapaletoda.pdf
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/ba187692b0f49efa90c1014d616e3c5d/nefojuzasiroxa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=limbo+game+guide+pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3fe.bin
fd73e15ee549a85c4056badc7371e092d011071ca468fdcb22184ba8f0aecf27
pdf-font-stream PDF embedded font (sfnt) at offset 0xD3FE 5136 bytes