Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a94f94c420e4f21…

MALICIOUS

PDF

47.4 KB Created: 2021-06-08 21:11:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 78e3276745660c196225c9f986d6c9a3 SHA-1: 10981bed12613db1d0225631a124368eba4791d6 SHA-256: 4a94f94c420e4f212de9e4c11644aa5eb371a8c2fb1f0eecd3cb9e0c34ff054c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for 'Free Robux' and requests recovery secrets, indicating a phishing or scam attempt. The embedded URL points to a resource that likely hosts a malicious payload. While no scripts were explicitly extracted, the PDF structure and ML classifier suggest malicious intent, likely involving a download or redirection to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.tw/app/431946152/free-robux-group-funds-hack-game-hack PDF link annotation
    • http://moto98.com/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/free-robux-cards-no-verification_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • http://moto98.com/images/free-robux-gameguardian_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://moto98.com/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://moto98.com/images/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://moto98.com/images/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • http://moto98.com/images/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/free-robux-and-tickets-roblox_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/how-to-get-free-roebucks-without-verification_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/earn-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://moto98.com/images/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://moto98.com/images/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://moto98.com/images/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://moto98.com/images/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://moto98.com/images/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
    • http://wolfzscriptsIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e0e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E0E 25100 bytes
SHA-256: 5e88e9b2816f6c6364c4f53715350bbb4e0fdb0045ff4fca099f773ea0e883cd
font_01_sfnt_off000087fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87FA 3936 bytes
SHA-256: 9853ca89115022285623111534c9ddc4f1dd062ee785b99bc0edec496de21ae2
font_02_sfnt_off000094e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94E4 18760 bytes
SHA-256: f8a7d7f31472145a4bbb94e4d114040864a6fcbec413f9bdaf56f957512ad409

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