Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdf38b8a96a19962…

MALICIOUS

PDF

47.2 KB Created: 2021-05-20 00:33:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 571482f0b37dc788af9791955be8eeca SHA-1: e77f99bd76caff687a36c907564da54260518980 SHA-256: fdf38b8a96a19962cbd7c97ad59d32ede9b9444848bfce4bcd573e97743ce02d
102 Risk Score

Malware Insights

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

The document contains lures related to hacking game accounts and obtaining in-game currency, directing users to external URLs. The presence of an ML classifier firing and specific heuristics for advance-fee scams and download buttons strongly suggests a malicious intent to trick users into downloading potentially harmful content. The document body and extracted URLs point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 5

  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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/431946152/how-to-hack-roblox-accounts-on-phone-game-hack
    • http://apteka-ot-sklada.com.ua/images/easy-robux-today-com_GM431946152.pdf
    • http://apteka-ot-sklada.com.ua/images/free-robux-on-ipad_GM431946152.pdf
    • http://apteka-ot-sklada.com.ua/images/wurst-client_GM479516143.pdf
    • http://apteka-ot-sklada.com.ua/images/free-robux-generator_GM431946152.pdf
    • http://apteka-ot-sklada.com.ua/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdf
    • http://apteka-ot-sklada.com.ua/images/master-coin-free-link_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/free-coin-master-spins-and-coins-for-daily_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/free-robux-generator-2021-no-human-verification_GM431946152.pdf
    • http://apteka-ot-sklada.com.ua/images/hack-coin-master-2021_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/coin-master-free-spins-and-coins-2021_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/coin-master-free-gold-cards-link_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/toolbox-mod_GM479516143.pdf
    • http://apteka-ot-sklada.com.ua/images/free-promo-codes-for-coin-master_GM406889139.pdf
    • http://apteka-ot-sklada.com.ua/images/wurst-112-2_GM479516143.pdf
    • http://apteka-ot-sklada.com.ua/images/how-to-get-free-robux-on-pc_GM431946152.pdf
    • http://apteka-ot-sklada.com.ua/images/can-you-get-minecraft-for-free-on-pc_GM479516143.pdf
    • http://apteka-ot-sklada.com.ua/images/how-to-hack-roblox-accounts-passwords_GM431946152.pdf
    • http://apteka-ot-sklada.com.ua/images/is-roblox-hacked_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b40.bin
34d92c592d2e3d9bccc816ee09e666a8cf6f64051e56d69a344b0b57af66c511		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B40 27160 bytes
font_01_sfnt_off00008a9c.bin
94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A9C 2824 bytes
font_02_sfnt_off0000944a.bin
92714a2af62378a1839a0ba08facac9787f9fdc52ffb1ff0f3d5734c2bdfa821		 pdf-font-stream PDF embedded font (sfnt) at offset 0x944A 18908 bytes

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