Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b94385cd6c87c29…

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 05:00:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 64156d8231ceb3b8abe1a281ca8b23ec SHA-1: 7a821ed1253c227b4757bd565a49eb1135a16a0b SHA-256: 6b94385cd6c87c290c0c2cb24e01762cc3be5c855ed3dd0ac58e95ce942664a2
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains embedded URLs and a lure for sensitive account recovery information, indicating a phishing or credential harvesting attempt. The ML classifier strongly flagged this PDF as malicious. The presence of multiple URLs suggests the document is designed to redirect the user to download malicious content or visit phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.online/app/406889139/moon-active-games-game-hack PDF link annotation
    • http://lib.fekon.untad.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-hacks-to-get-spins_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-online-free_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-spins-promo-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.fekon.untad.ac.id/repository/how-do-you-get-free-roblox-money_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_004_off00004f6e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F6E 25412 bytes
SHA-256: 512c52f87d2050f20d5fc48a92be8134d058ecc3f8f2a0d8dc95156ef46d822b
font_01_sfnt_off0000892c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x892C 17920 bytes
SHA-256: 6572202fb11b79787028deba1beb076b209f1779d589edab2c04e97f197d6ee2

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