Malicious PDF — malware analysis report

Static analysis result for SHA-256 3809c0f18597b5d1…

MALICIOUS

PDF

89.6 KB Created: 2021-07-03 10:50:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 69206fd00ff9dce492c9988e77ebecce SHA-1: 2ff9ee1135fa9909040c24e79301698086d2f1b7 SHA-256: 3809c0f18597b5d196c3fa3d3907fb5ac219fd9d7f05c2c5439cde87f066a225
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with one specifically identified as a potential lure to a malicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the presence of embedded URLs suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://crewmak.ru/uplcv?utm_term=sd+movies+point+war+full+movie+download
    • https://narimasu-chintai.net/jcfiles/file/lekudaxutajuruwoxin.pdf
    • http://sh-ruiyangcpa.com/userfiles/file/2021-6///20216272046568764.pdf
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b369174eb---7906762752.pdf
    • http://jump360.co/upload/files/20210616081358.pdf
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091ae29175ae---sorudorifivilasodesepo.pdf
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a88bac8dde0---wupadafarodoxitifal.pdf
    • http://filtrydokoparek.pl/img/all/50558355014.pdf
    • http://skup-laptopow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a854fae2666---33082855619.pdf
    • http://imaginove.eu/data/Files/35538025766.pdf
    • http://animationcoach.com/userfiles/file/zikizugatetukezub.pdf
    • http://tragiaocolamsapa.com/userfiles/image/file/18942355291.pdf
    • https://www.carrentchiengmai.com/files/55627479768.pdf
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160977f7e44ebc---naromimepoxem.pdf
    • http://studio-castiglioni.com/userfiles/files/kovosi.pdf
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c63f894d9e3---30933211968.pdf
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/81bd9b36f96dc0fbc47b085fbbb1fc79/fegipovixitaguxegifiwoli.pdf
    • http://adamlegal.com/userfiles/file/digigegerosekupogobume.pdf
    • https://thaiahpa.com/flash/files/givorisiva.pdf
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d986f7123e---18273768279.pdf
    • http://fnb-concepts.com/images/uploads/files/lizunujikemi.pdf
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078757bd33be---51752387553.pdf
    • http://parisplaza.net/clients/3/35/3561a7ce45da2f2f114a98ea6175a4b1/File/17416553304.pdf
    • 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_off0000f8bd.bin
d7e48e5f22dc24104293c364af1a0e1ffc02f53c48d41277a9692915f6c4797c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BD 10984 bytes
font_01_sfnt_off00011247.bin
9938e12e8752a36c51326515d1f67ddabc9f2f143dfca4e434a1735d5f976c27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11247 17756 bytes
font_02_sfnt_off000140fa.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x140FA 16792 bytes

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