Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f3c4ad30eb2b1ca…

MALICIOUS

PDF

45.4 KB Created: 2021-05-15 06:20:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e5cd26d393c6ef1e529ab12021741291 SHA-1: e694de569927748db00db6b560643712cce09e58 SHA-256: 0f3c4ad30eb2b1ca876d24e089d4d6f04aff085bbffbf691a7ccfbe0cda8e5d9
62 Risk Score

Malware Insights

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

The document contains a clear lure for a "Coin Master Hack Online Cheat" and includes an external URI pointing to a suspicious URL. The presence of multiple embedded URLs, many of which are also related to game hacks and cheats, further supports the malicious intent. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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.xyz/app/406889139/coin-master-hack-online-cheat-game-hack
    • http://firstaidacademy.be/images/how-to-get-free-clothes-on-roblox_GM431946152.pdf
    • http://firstaidacademy.be/images/hack-xp-net-generators-coin-master_GM406889139.pdf
    • http://firstaidacademy.be/images/robuxhub-net_GM431946152.pdf
    • http://firstaidacademy.be/images/coin-master-hack-spin-generator_GM406889139.pdf
    • http://firstaidacademy.be/images/roblox-hack-me_GM431946152.pdf
    • http://firstaidacademy.be/images/how-to-play-minecraft-for-free_GM479516143.pdf
    • http://firstaidacademy.be/images/coin-master-hack-without-verification-2021_GM406889139.pdf
    • http://firstaidacademy.be/images/free-robux-for-free_GM431946152.pdf
    • http://firstaidacademy.be/images/robux-generator-without-human-verification-2021_GM431946152.pdf
    • http://firstaidacademy.be/images/robux-for-offers_GM431946152.pdf
    • http://firstaidacademy.be/images/roblox-script-hacks_GM431946152.pdf
    • http://firstaidacademy.be/images/free-coins_GM406889139.pdf
    • http://firstaidacademy.be/images/coin-master-free-coins-2021_GM406889139.pdf
    • http://firstaidacademy.be/images/coin-master-hack-spins-download_GM406889139.pdf
    • http://firstaidacademy.be/images/roblox-accounts-for-sale-free_GM431946152.pdf
    • http://firstaidacademy.be/images/how-to-get-minecraft-for-free-on-your-phone_GM479516143.pdf
    • http://firstaidacademy.be/images/freerobuxhack-us_GM431946152.pdf
    • http://firstaidacademy.be/images/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdf
    • http://firstaidacademy.be/images/roblox-rape-hack_GM431946152.pdf
    • http://firstaidacademy.be/images/free-coins-coin-master-today_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a71.bin
39f88fd7c48d2b1061c6fea8ce9ce012d665a0d880da10bbc757d16b1e21d933
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A71 26068 bytes
font_01_sfnt_off0000863d.bin
d2d857e2ddc1082c7667b23f2135a5c0ba26a2ff8b42c86c89c8e0b09aece855
pdf-font-stream PDF embedded font (sfnt) at offset 0x863D 2868 bytes
font_02_sfnt_off00009028.bin
443aed1378757c773e02f5a5987283787609be462fae8ba99418116e4694aa7f
pdf-font-stream PDF embedded font (sfnt) at offset 0x9028 17956 bytes