Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b5d6f7bf8752bbe…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 16:41:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7fa6d702b9e4742fb4722630f60a1796 SHA-1: a1abf35069e96372d9df6c056ba9e555bc5ca28e SHA-256: 8b5d6f7bf8752bbe97cb9d4b1dbc0e4f301695dfdf51b8a808253db88d6995ab
62 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a document body that explicitly advertises free Robux and gift card generators for popular games. The presence of a high-confidence ML classifier firing and external URI heuristics strongly suggests malicious intent. The document likely serves as a lure to direct users to download or interact with malicious content hosted at the provided URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-robux-roblix-gift-card-generator-game-hack
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-spin-link_GM406889139.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-robux-admin-panel-pastebin_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-minecraft-account_GM479516143.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/how-to-get-free-robux-on-phone_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/como-hackear-el-juego-coin-master_GM406889139.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/roblox-robux-generator-2021_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/roblox-rewards-robux_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/roblox-bot-free_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-spin-ml_GM406889139.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-2021-free-spins-link-blogspot_GM406889139.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-15-free-spin-link-today_GM406889139.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/roblox-hack-2021_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/roblox-urbis-level-hack_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/best-free-roblox-exploit-2021_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/where-to-get-free-stuff-on-roblox_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-roblox-gift-card-codes-2021_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-free-link_GM406889139.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/synapse-roblox-free-download_GM431946152.pdf
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-robux-no-survey-or-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002fbd.bin
81a06e548f732f333c77054092dd67fe73f1c8c20205bec88c2e3995c007a148		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBD 22372 bytes
font_01_sfnt_off000061ad.bin
50f3cbcc689fd1b9986725aae5eaf04b585d042f5ce3f34c652fe321512d8a13		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61AD 19188 bytes

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