Malicious PDF — malware analysis report

Static analysis result for SHA-256 b320e920a5720677…

MALICIOUS

PDF

47.4 KB Created: 2021-05-19 23:56:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 137f585f71c8eef9998436055a91ff0b SHA-1: f865ee83ed02c1f1b69997635e2269aa4edaddc9 SHA-256: b320e920a5720677669214dee6d89ca60a4e2a5aaca05a5d8ac0c28414486868
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains numerous embedded URLs and a document body that promotes game cheats and free in-game currency, strongly suggesting a lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures indicate an attempt to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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-cheats-free-game-hack
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-daily-free-spins-link-2021_GM406889139.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/earn-free-robux-today_GM431946152.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/funbloxxyz-free-robux_GM431946152.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-get-free-robux-for-kids_GM431946152.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-hack-2021-no-human-verification_GM406889139.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-roblox-accounts-with-robux_GM431946152.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-haktuts_GM406889139.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/minecraft-book-collection_GM479516143.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/send-me-500-2021-spins_GM406889139.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/robux-offers_GM431946152.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-robux-no-verification-2021-ios_GM431946152.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/can-you-give-me-free-robux_GM431946152.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/roblox-com-free-play_GM431946152.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-hacks-for-coin-master_GM406889139.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-coin-master-spins-hack_GM406889139.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-robux-hack_GM431946152.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/free-coins-and-spins-in-coin-master_GM406889139.pdf
    • http://mtsnslemankota-elearning.net/__statics/gudangsoal/files/coin-master-hacks-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c67.bin
7a1aa612e28829ea6454129958b67bbf795188617c6fe876cf092f23c66f5ebd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C67 29588 bytes
font_01_sfnt_off00008e9b.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9B 2840 bytes
font_02_sfnt_off0000984d.bin
3080be39145a7e19e49f31c27d216b7ef11c5a53cf2903de633486ff32396878		 pdf-font-stream PDF embedded font (sfnt) at offset 0x984D 17876 bytes

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