Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ad96db4160d0af8…

MALICIOUS

PDF

47.0 KB Created: 2021-06-09 13:55:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2a540fd65cc7bd50ab16c92340beae44 SHA-1: b9f7e91ea2b334976b1a5f5416bcc709f7a37db5 SHA-256: 3ad96db4160d0af8994b720ab5be0b9b447cb4901b9dbf00dd1cdf2cdae45092
62 Risk Score

Malware Insights

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

The ML classifier strongly flagged this PDF as malicious. The document body and embedded URLs promote game hacks for titles like Roblox and Coin Master, indicating a lure for potentially malicious downloads or phishing. The presence of a visual download button and callback lure heuristics further support a scam or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • 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.tw/app/431946152/criminal-vs-swat-money-roblox-hacks-game-hack PDF link annotation
    • https://www.audev.com/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://audev.com/images/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • https://audev.com/images/get-free-roblox-right-this-second_GM431946152.pdfIn PDF document text
    • https://audev.com/images/como-ser-hacker-en-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://audev.com/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://audev.com/images/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • https://audev.com/images/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/roblox-newgen-free-robux_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/free-tiktok-likes-and-followers_GM835599320.pdfIn PDF document text
    • https://www.audev.com/images/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://audev.com/images/password-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://audev.com/images/hacking-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • https://audev.com/images/free-free-robux_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://audev.com/images/coin-master-free-spins-and-free-coins_GM406889139.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_off00005515.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5515 26308 bytes
SHA-256: 2fea482b980a123aa9dbd03d803900803c0cbf68518cffddd85ba2278453a6e2
font_01_sfnt_off000091f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91F8 19340 bytes
SHA-256: 2004a65aacece01a2a0f419aa9db8c134fa3d17fbe00a6dfe4c9a328eef8b8e9

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