Malicious PDF — malware analysis report

Static analysis result for SHA-256 46e8b9c44231bae4…

MALICIOUS

PDF

70.7 KB Created: 2021-05-03 03:29:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c3c1cfe96b64600447946fcd80acc511 SHA-1: 28e8cfb2a578cbc3202c4f5ae4d1f60c015e932d SHA-256: 46e8b9c44231bae468a3501b51789beb27ba87a20c005fbb286f663b0c0c6d8f
126 Risk Score

Malware Insights

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

This PDF document was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, suggests a lure related to 'Consular report of birth abroad philippines'. The presence of numerous links pointing to compromised WordPress upload directories indicates an attempt to host and distribute malicious content, likely a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9717

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/t7qf6kh5i3rj9g24tufbv10rgb/vovijirazofusolon.pdf
    • https://kindliving.org/wp-content/plugins/super-forms/uploads/php/files/tmp/tenokanu.pdf
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087de7546078---zolukeketerex.pdf
    • https://wilsonbarrera.com/inicio/wp-content/plugins/formcraft/file-upload/server/content/files/1607cad8a517bd---52965115128.pdf
    • https://nscs.org/wp-content/plugins/super-forms/uploads/php/files/9259d63330a9551754bbd2b89bcd0592/87077211351.pdf
    • https://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/71639f27ae43993825727ccb5f5c38f4/wewokudodibuto.pdf
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070685dc3894---jowamumalirozagidep.pdf
    • https://aedwea.com/upload/foto/pafifisowabodavopu.pdf
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/d31d8d4b709eac3c4b97881449232004/guvugaxelusitenobosabo.pdf
    • http://jockmurray.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072b9ad2ef2c---75987080102.pdf
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/f5pi139heda91tqloegkeo6n83/36882352453.pdf
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160752d6d47817---86951244782.pdf
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16073d6ecb5950---bejuxagumu.pdf
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/tra8uib7r6qh1uj2j0s0mt3vjf/supiki.pdf
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160756ae88f78f---jipebexonikiwodexogexuw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=consular+report+of+birth+abroad+philippines
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0b1.bin
dada1342b30ae347ecb8b475882ab12b9d59c63243f1fc32b6b382256dd032b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B1 5176 bytes
font_01_sfnt_off0000f238.bin
ed81d7831042f1431facfbb179b01297e0ca74bf0cbef7b7c52556d3ed402fb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF238 11240 bytes

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