Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d05fc7fdcf02473…

MALICIOUS

PDF

88.3 KB Created: 2021-07-13 20:15:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 6ad1f37d96470d4230ac1c1480e02670 SHA-1: d63ae83b856408c9b65575fba9ca3cc261980367 SHA-256: 0d05fc7fdcf024733df8a65c6f7e4ec9a2ad95f04195c951f2591e98fb4bc197
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains embedded URIs that likely lead to phishing or malware download sites. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest an attempt to trick the user into visiting a malicious external resource, consistent with spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://princeworldwide.com/multimedia/userfiles/file/xijitukajiriv.pdf
    • https://chaplains-camps.org/upload_picture/file/59826221508.pdf
    • https://www.booster-p.com/wp-content/plugins/formcraft/file-upload/server/content/files/160944d1164d6f---lovof.pdf
    • https://bbpartner.cz/userfiles/file/34645994071.pdf
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095b9a029b46---62177759671.pdf
    • http://www.urbanwaterways.info/files/nisajewirekepe.pdf
    • https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/atesfigrfuf966qm5u22eagshe/simaxaraxiz.pdf
    • http://alexanderkanevskyartistbiography.com/clientMedia/file/miwude.pdf
    • https://chinese-wall.tw/upload/files/95924570766.pdf
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/50092b53707f2bbce22bfa1cbc695797/kutopivuvon.pdf
    • http://wchs65.org/clients/b/bb/bb65574a37642f7fe3135935df861e67/File/zisur.pdf
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16086f98356c9f---39083594960.pdf
    • https://maidintown.co.uk/wp-content/plugins/super-forms/uploads/php/files/0eead9c30e02e449c79d80dcacf5498a/selenit.pdf
    • http://thestarbusan.net/FileData/ckfinder/files/20210702_FE60E73932D9F568.pdf
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/16088736e63c0d---87518862416.pdf
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c90b34da519---watetajosevuvawitulinil.pdf
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160767408954cd---vofiza.pdf
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/m900olemvtmkvf7a34i6cesfb8/jipugeju.pdf
    • https://www.rekalibracija.com/wp-content/plugins/super-forms/uploads/php/files/7636818b5e98d99453e119d418e22266/ferakijelenezivolul.pdf
    • http://ski-experience-japan.com/images/blog//file/91116709685.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=gonorrhea+from+anal
    • 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_off0000f94a.bin
5239bd28d173094fad0f78f955f90f60386f284c99ffbd3cd79afd504c772077		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF94A 10160 bytes
font_01_sfnt_off00010fbf.bin
4c8abccebc9ecd130ccd55743bfcfe7d7fb7fcdcf56031390ee34fe2a894027e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FBF 17128 bytes
font_02_sfnt_off00013cad.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13CAD 16792 bytes

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