Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8f1eb075567578b…

MALICIOUS

PDF

86.7 KB Created: 2021-07-03 07:22:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 784c7f8d30857b3174400c7fbea042a0 SHA-1: c4b76ae673335f49b99f3817829efc8ecb7e3634 SHA-256: c8f1eb075567578b008dcb40ef3b48b7d1323768279f3d6d6df66b70b29cb729
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains multiple embedded URLs, with several pointing to unknown or potentially malicious domains, suggesting it's used to redirect users to harmful content or phishing sites. The presence of PDF_URI and EMBEDDED_URL heuristics further supports this, indicating the document's primary function is to facilitate access to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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 https://pyhm.ca/wp-content/plugins/super-forms/uploads/php/files/4862cqpg3mblijpkkqjsr58j2p/42185942113.pdf
    • http://www.kinoimaging.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16087bd2925841---pafujav.pdf
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/6i2c11iq1r4s2vge53c3phobd2/jemigabeledalo.pdf
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/6702195130866fccb59dab35eafd151a/75259493821.pdf
    • http://sam-global.info/files/file/18850587486.pdf
    • http://www.niziointerior.pl/upload/file/gimafenajufub.pdf
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9f4cbe3d88---21983044630.pdf
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160779eff8311b---73804137554.pdf
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/ro9gfio0pskck3nr0vicqkp1v6/27168414683.pdf
    • http://andrelandberg.com/userfiles/file/14023063595.pdf
    • http://guchenes.com/d/files/96993397549.pdf
    • http://www.britocunhaadvocacia.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160ad70d05ef16---85172387722.pdf
    • https://lakecountyoralsurgery.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092868cb9b7a---xejibavewaf.pdf
    • http://cablexconsulting.com/Upload/file/34980078050.pdf
    • https://amenagementsoleil.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ddc7e38467b---lejevozijise.pdf
    • http://poorclarescork.ie/images/80118654292.pdf
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608e7a4730860---93584039759.pdf
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160a730031177d---7067698562.pdf
    • http://stkvn.ru/wp-content/plugins/super-forms/uploads/php/files/99ffabcb9c5ff25552ed773acf51940b/rumikiwapilejovanoze.pdf
    • http://bualuang101.com/backoffice/upload/files/gibiletav.pdf
    • https://caribemed.com/userfiles/file/zapuxusul.pdf
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d5b70cd0ad---4453746715.pdf
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b64bfe70104---26216131022.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=bible+story+of+balaam+and+the+talking+donkey
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • 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_off0000ef06.bin
15a7d32147956c155254221a3077e111a0420e5209cb5107ab6b3c46b6b40f39		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF06 17136 bytes
font_01_sfnt_off00011b4c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B4C 16792 bytes
font_02_sfnt_off00013363.bin
087a2e23b58f4bd4cd44e0f08c8c87fc86bc417a5858321a4dbca9f1d9815d7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13363 11200 bytes

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