Malicious PDF — malware analysis report

Static analysis result for SHA-256 8fc611d9bf2b03bd…

MALICIOUS

PDF

42.9 KB Created: 2021-05-11 12:42:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 139fe95901dd9f80e4dc0c59834fa593 SHA-1: 0960c74cf62ffbd6c16a38ea9bf706d1dd69d51b SHA-256: 8fc611d9bf2b03bd57369b872f2327383374e69bb898db3219fb1a36560cae7f
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent external URI pointing to resources offering game hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of download lures and callback phishing elements suggests a deceptive workflow. The document likely aims to trick users into downloading malware or engaging in further phishing activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/hack-coin-master-xyz-game-hack
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/free-minecraft-realm-codes_GM479516143.pdf
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/get-free-spins-for-coin-master_GM406889139.pdf
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/free-robux-ad_GM431946152.pdf
    • http://elearning.mysadam.info/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://elearning.mysadam.info/__statics/gudangsoal/files/i-got-hacked-on-roblox_GM431946152.pdf
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/roblox-bloxburg-hack_GM431946152.pdf
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/spin-coin-master-free_GM406889139.pdf
    • http://elearning.mysadam.info/__statics/gudangsoal/files/coin-master-free-spins-glitch_GM406889139.pdf
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdf
    • http://elearning.mysadam.info/__statics/gudangsoal/files/generator-robux_GM431946152.pdf
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/coin-master-heaven-free-spins-and-coins_GM406889139.pdf
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://elearning.mysadam.info/__statics/gudangsoal/files/minecraft-login-free_GM479516143.pdf
    • http://elearning.mysadam.info/__statics/gudangsoal/files/coin-master-spin-link-free-download_GM406889139.pdf
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/free-robux-no-offers_GM431946152.pdf
    • http://elearning.mysadam.info/__statics/gudangsoal/files/earn-robux-today_GM431946152.pdf
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/hack-coin-master-free_GM406889139.pdf
    • http://www.elearning.mysadam.info/__statics/gudangsoal/files/coin-master-promo-code-2021_GM406889139.pdf
    • http://elearning.mysadam.info/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdf
    • http://elearning.mysadam.info/__statics/gudangsoal/files/free-roblox-executor_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c53.bin
d99a362a1e4f60fe6876f5fa36751c9145204a2167db7c60474afaffd846d9a8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C53 25152 bytes
font_01_sfnt_off0000854f.bin
b4a5e2d1b98d85f377b81d088c812e83840d387c67e89236991879b29f5e5235		 pdf-font-stream PDF embedded font (sfnt) at offset 0x854F 18204 bytes

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