Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff6fc44f7c3e1de6…

MALICIOUS

PDF

85.6 KB Created: 2021-07-04 08:06:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 3dc44d634524255004815ed4d953345e SHA-1: f5ca28a0808a92c1afaeb6353e53366acc73a745 SHA-256: ff6fc44f7c3e1de622cece58fe70d7ef88d466f15ed42a6f2932a4b089759865
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of embedded URLs, some of which point to suspicious PDF files, suggests a phishing or credential harvesting attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160a643de1ba3d---pukibokek.pdf
    • https://postelezmasivu-zlin.cz/ckfinder/userfiles/files/nuzebisotevivupefawife.pdf
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a45d03b5200---51755873239.pdf
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2a63b9888---69204422327.pdf
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/e1d79e2b44422ea7662916c13d2275d9/delijavagepisagopiwobokox.pdf
    • https://pousadamarazul.tur.br/wp-content/plugins/formcraft/file-upload/server/content/files/16092a49ecf389---80053091130.pdf
    • http://willbramephotography.com/badomajuzuxep.pdf
    • https://www.oasipizza.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ab169311c1b---62098624000.pdf
    • https://bandotrading.it/uploads/file/zifefumamikazederavifi.pdf
    • https://detectiveoffice.net/userfiles/file/28842411348.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608923a95df2c---74968709910.pdf
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c135afcf2d8---sovogubalunesaborezatuv.pdf
    • http://globaltruthmediagroup.com/clients/a/aa/aa8380eac451876ae6ab993bf3a720d6/File/29380745370.pdf
    • https://kede.org/userfiles/file/13654458471.pdf
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080040eec111---69666465803.pdf
    • http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b77b97bffd1---21516605454.pdf
    • http://maxgear.cz/webpagebuilder/ckfinder/userfiles/files/31474327332.pdf
    • https://cutletsmeat.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e5eef6cb39---79282893103.pdf
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d5cae9ab80---96644057404.pdf
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/78e26a26e50f27c80aff8698857d8f4b/48948470734.pdf
    • https://www.baileysmilk.com/wp-content/plugins/super-forms/uploads/php/files/4e6935bfad2121d8702d5aa2bf3e1b2c/lamufozo.pdf
    • http://camonetinternational.com/files/file/95343383043.pdf
    • http://udokutscher.de/gfx/userfiles/files/tosuverolujofexavefenaza.pdf
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/v7he6q08q933ts1gm5acflp7ej/27063233846.pdf
    • https://humicdp.com/uploads/2021-06-19/images/files/juseluselulalanev.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=chinese+yuan+in+usd
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec95.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC95 16792 bytes
font_01_sfnt_off000104ac.bin
b00689cb77983fa137d09f85f61d0cb9ae883e2743571fc397fadeabf17452f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104AC 10228 bytes
font_02_sfnt_off00011b94.bin
a915060ad1a47d5f35a2ff72c14ceed79da3b391186d3b84c0c9484a2de926b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B94 18168 bytes

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