Malicious PDF — malware analysis report

Static analysis result for SHA-256 806e30d35bb37592…

MALICIOUS

PDF

79.3 KB Created: 2021-05-04 20:30:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae1080500d65a33aff3e7c181ff4b255 SHA-1: 4439490555ed78fe912b948e31b8235ba75b54fb SHA-256: 806e30d35bb37592d3392e5460564d01c1d798b7fb860d9fbcbdae263f47feca
124 Risk Score

Malware Insights

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

The PDF document contains numerous links, many of which point to compromised WordPress sites hosting further PDF files. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The document's content is a lure, attempting to disguise its malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9232

Heuristics 4

  • 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.
  • 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://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/91268ae85630ffef96520c126527fbbf/kututopajuwusu.pdf
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1606c97a339709---desefidepunonafonor.pdf
    • http://www.x454.com/wp-content/plugins/super-forms/uploads/php/files/v5iae1rjblj9bm1ue1vp5ggi55/65471514023.pdf
    • https://www.clubmanizales.com.co/wp-content/plugins/formcraft/file-upload/server/content/files/16083ef15d6edf---zizigogapenimuvukazakaram.pdf
    • https://wkd-uk.com/wp-content/plugins/super-forms/uploads/php/files/3efaaf0a43a8eb870951368d04aa59f6/38022623428.pdf
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160854ef2a5177---93112663126.pdf
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16076ae0a48c69---wivexorowujomegunume.pdf
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/ea26bfd53d321c69b5d21392ad5a76cc/94059434902.pdf
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/1243eeb39cb1323f40fa7f9fbc44fdd8/xirebifaburibafaxetefebim.pdf
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160737107c0b61---menanakaxozifelatolapekok.pdf
    • https://rlvanstory.com/wp-content/plugins/super-forms/uploads/php/files/83edfcd3f52af3731e3e2203e1f21ca5/30328606708.pdf
    • http://delawaretravelmedicine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607184b682cb1---99407962862.pdf
    • http://arcdesantmarti.com/biocop/Images/images-editor/file/75542631184.pdf
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160856241a55e9---84980487468.pdf
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/043a19f809b6df4ae96c3bd752fb7541/42286670052.pdf
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/a7c14a380263cf1482d6700f67203fe0/dolenufomutu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=borderlands+3+pc+performance+issues
    • http://dejavu.sourceforge.net
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_007_off0001301e.bin
d37a046a5a15e0952b0a6b96cdc7342089895c919c8e5e13feb1082e8e766ba2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1301E 6742 bytes
font_00_sfnt_off0000f8b5.bin
d6add5179464fa14de78ae7fd626c8f08d9fb0c54471a0ad2fa4c45f49a1e94c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B5 5516 bytes
font_01_sfnt_off00010b62.bin
5dc32fefd954989d9caf555d463b76ed8c0a3c1874e49794c017d91b460f4fa5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B62 10744 bytes

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