Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e03241e52dc02ea…

MALICIOUS

PDF

76.5 KB Created: 2022-05-19 18:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 8bf15d0b4ced6ccda0563c8cd7259820 SHA-1: f7b25a6c190426edc94f7cda0efd8c106b104a5f SHA-256: 8e03241e52dc02ea6a3e4f854655840cc246dc314a5266ebf6675bef4c72ff6b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains an external URI pointing to a suspicious domain, which is a common tactic for phishing or malware delivery. The document body is heavily obfuscated and unreadable, suggesting an attempt to hide malicious content or a failed rendering process.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://sunuf.co.za/YmrXLWy8?keyword=libros%20masonicos%20antiguos%20pdf%20online%20en%20vivo
    • http://bargiel.com.pl/ckfinder/userfiles/files/nerexepefubelivogutixo.pdf
    • http://ebslang.net/_UploadFile/Images/file/42662287534.pdf
    • https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621290a2dce7c---10590647831.pdf
    • http://atthaya.com/file_media/file_image/file/55207499273.pdf
    • http://sinkrontech.hu/admin/kcfinder/upload/files/49867814797.pdf
    • https://promoform.coreform.it/uploads/file/77640326450.pdf
    • https://lorurofesun.weebly.com/uploads/1/4/1/5/141572265/5b22c1d7ae4b.pdf
    • https://sovitinalul.weebly.com/uploads/1/3/4/8/134882068/bujenudulupif.pdf
    • https://gabelutabidos.weebly.com/uploads/1/3/4/6/134678244/zosixowuzifawap-lekuwabofa-nakebuzinezu-ramujes.pdf
    • https://tonixomakotej.weebly.com/uploads/1/4/1/2/141253677/jesafukivur.pdf
    • https://dtcm.meetingmindsexperts.com/multimedia/userfiles/file/supulizetugekigeza.pdf
    • https://jujowoma.weebly.com/uploads/1/4/1/5/141549126/9991465.pdf
    • https://dalton-english.com/userfiles/file/58987254585.pdf
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/161ff38d373a1d---43741956229.pdf
    • https://menimewutezosel.weebly.com/uploads/1/3/3/9/133997121/fb3fe5a4.pdf
    • https://oasis-travel.ro/files/puzaxuzilezurinanexuxod.pdf
    • https://bematurom.weebly.com/uploads/1/3/4/8/134886193/2453e9e48a7.pdf
    • https://mizanupiw.weebly.com/uploads/1/3/4/2/134265802/6a979f466d65a11.pdf
    • https://nepalimodelagency.com/userfiles/file/gafaxilo.pdf
    • http://www.slappedtogether.com/editoruploadfiles/file/wemuvonogunatumuvojobusek.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_off0000c445.bin
3649a9b8bc199716933e2bdad710776db2f580a3347b523f3cd02e325b8bc630		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC445 11224 bytes
font_01_sfnt_off0000de2d.bin
5e4c9dc89cdd85876086eba78e31e980fd9958a2630b7a51ca2366d7a4c0de3f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDE2D 17748 bytes
font_02_sfnt_off00010b7a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B7A 16792 bytes

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