Malicious PDF — malware analysis report

Static analysis result for SHA-256 21a75aac8d5050a0…

MALICIOUS

PDF

62.4 KB Created: 2021-05-17 15:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f7f8cdb36d1561beaf77739978e8aa4 SHA-1: 079dfc42ddbf9c0af446e53e8e4da0c146475fec SHA-256: 21a75aac8d5050a0551c2aff93d9ecd8afef85ca4a96c7abb3b3067fe1345581
94 Risk Score

Malware Insights

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

The sample was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains embedded URLs pointing to potentially malicious PDF files, suggesting a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains metadata related to its creation, but no direct textual lure is discernible.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9944

Heuristics 3

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/5ne9an7jk8178ln15i6dq3suj2/gejuwitox.pdf
    • http://www.telsercom.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ba7482bcad---50681209451.pdf
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/86578b1a6785df83b991767a3fd8eab7/88587795033.pdf
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607437a697abf---29045889919.pdf
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb79ded6df---85253687558.pdf
    • https://fellowpeo.com/wp-content/plugins/super-forms/uploads/php/files/cb037e5f82dee97620f607556a0f5cfb/zetewate.pdf
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/16070f6f268412---62678288128.pdf
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606ff53596723---90423096363.pdf
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/b3bec00646763ab6b88324dcc4d81d83/10262514116.pdf
    • https://ewms.vn/wp-content/plugins/super-forms/uploads/php/files/2jlc61ovtbd9m45da2t6ee4inf/2053099174.pdf
    • http://abogarestudio.com/userfiles/file/bixunaxegunogedewuli.pdf
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608d126677a4c---jumufesazon.pdf
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/d1f826dcf94becc2c4c022b07ebc8afd/nomukojedewugelelojo.pdf
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/0c48d9cbc4790b4479de91ea26436b10/84197461040.pdf
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/9e33e35451b6b4aa6de2ac2f75da6269/59312003988.pdf
    • https://www.kbstephens.com/wp-content/plugins/super-forms/uploads/php/files/0f47cab75e54eb75cca2787c790f11b8/18956798141.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=storage+wars+darrell+sheets+health
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df95.bin
3ed1888191410205b4e80fab84a3ca49978389f8ea9d26dab4b3ac6761d03dd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDF95 4916 bytes

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