Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f4f9e5b1617aaf…

MALICIOUS

PDF

45.3 KB Created: 2021-05-19 17:44:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f35f337c3dee50b714c247039c2e450c SHA-1: 6aa7a92d6c8a1d5018fc93f6a31d595a25b03563 SHA-256: 95f4f9e5b1617aafa4ea97f187258362d612cb962c82a292925246ccb8defb2c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document body and extracted URLs indicate a lure for free game currency or cheats, a common tactic for phishing or malware distribution. The presence of a "ML_NYX_PDF_MALICIOUS" heuristic firing and the "SE_MFA_LURE" finding suggest the document is designed to harvest credentials or abuse multi-factor authentication. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.xyz/app/431946152/free-robux-generator-2021-no-human-verification-game-hack PDF link annotation
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/real-robux-codes_GM431946152.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/robux-free-c_GM431946152.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://serviceaccctvjogja.com/ckfinder/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004fcc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FCC 26620 bytes
SHA-256: 3775d33b3c5858d2bd9ac97bcecc36625c5f9e205694b9dc88d87df8220acce8
font_01_sfnt_off00008be4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE4 19260 bytes
SHA-256: c7b90a5cfba5c375f14137d6940681acb1ecffd006539937a4c5badd529f0ccc

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