Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c8b9e5d9d4658a8…

MALICIOUS

PDF

67.9 KB Created: 2021-04-12 19:46:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2f95c4f3b53ce2483128bb420ce9da33 SHA-1: 7f7375b81f3319f1454ec4bfc36216e5e295d962 SHA-256: 0c8b9e5d9d4658a881120bf03b316cfa3b671e1391d607968445561f305422a7
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically indicating a phishing or trojan threat. The document body contains text referencing 'apk geometry dash 2.1 todo desbloqueado', suggesting a lure to download an application. While no scripts were extracted, the presence of embedded URLs and the overall detection indicate a phishing attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9265

Heuristics 3

  • 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
  • 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://www.afscme65.org/system/files/webform/11173368180.pdf
    • https://grossenbacher.co.nz/en/system/files/avoidance-training-certificates/4264017636.pdf
    • http://www.pbttphtk.gov.my/sites/default/files/webform/vojazasazobixupolaxi.pdf
    • http://cicatsalud.com/html/sites/default/files/webform/19824170549.pdf
    • https://www.natsihwa.org.au/sites/default/files/webform/dalobasowi.pdf
    • https://www.mothercare.ro/sites/default/files/webform/resumes/28941778760.pdf
    • https://aboss.by/sites/default/files/webform/31226501773.pdf
    • http://www.sumnercountyhospital.org/sites/default/files/webform/sinuwoxifazuroli.pdf
    • https://www.enwidth.com/sites/default/files/webform/resumes/ralivowu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=apk+geometry+dash+2.1+todo+desbloqueado
    • https://ec.europa.eu/eip/agriculture/sites/default/files/webform/76225898136.pdf
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c54f.bin
ffeb89eaad713c9717385028f79c9757067aafb2c2382ea8cbab0e6efe35a425		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC54F 6744 bytes
font_01_sfnt_off0000d637.bin
4a9d2d00147e9fa2dcb1798cafe30f3edd6c9fca624fe0482f28310a43a1214b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD637 6012 bytes
font_02_sfnt_off0000ea90.bin
d4785c39653fd3dc5b9bb9761b489b638fb4a90efc57cc4005a3cf96acde0d43		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA90 11456 bytes

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