Malicious PDF — malware analysis report

Static analysis result for SHA-256 f906406217d16ed6…

MALICIOUS

PDF

41.6 KB Created: 2021-05-15 14:19:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 5b4ffb1004e720e43f54bd244ef5e559 SHA-1: 15caab0555dee5b6fe9573512abebe565912e9a9 SHA-256: f906406217d16ed6394aaaf584c944980cd233e54ffd3d043ac6a0ff788bce73
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents itself as a "Coin Master Hack Tool" and contains numerous embedded URLs pointing to game-related cheats and hacks, indicating a lure for potentially malicious downloads. The presence of a "secret recovery" lure heuristic suggests an attempt to trick users into revealing sensitive information, possibly related to game accounts or cryptocurrency wallets.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/406889139/coin-master-hack-tool-for-pc-game-hack PDF link annotation
    • http://www.lovecraftiana.com.ar/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/robux-redeem_GM431946152.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/kachifpro_GM406889139.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/cm-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/free-spins-for-coin-master-that-work_GM406889139.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/i-need-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.lovecraftiana.com.ar/images/free-robux-just-click_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_off000048eb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48EB 24428 bytes
SHA-256: c0fa42f0e5eb2abebb31e8b7d0260999b4779653f2df11ce01f65044dc5469c4
font_01_sfnt_off000080e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E8 18108 bytes
SHA-256: 41676337f8d66d7dfaadfd94b2675436d9ece3084dad9ad1b3cc1116d791989a

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