Malicious PDF — malware analysis report

Static analysis result for SHA-256 729d010ee0e1200a…

MALICIOUS

PDF

41.4 KB Created: 2021-05-16 13:14:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8d7557842c5951c5625e969306274274 SHA-1: 2c9fb8c5ad348c0a46edf09b3d112728fc0f6a08 SHA-256: 729d010ee0e1200a091b6ebb2eb0d30f403541c3cbbdf53b7a981a7333efda98
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and a prominent call-to-action, strongly suggesting a phishing or scam attempt to trick users into downloading further malware. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were explicitly extracted, the presence of embedded URLs and the document's content point towards a malicious intent to deliver a second-stage payload.

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/cm-free-spins-and-coins-game-hack
    • http://pro-graphite.com/images/coin-master-hack-pro_GM406889139.pdf
    • http://pro-graphite.com/images/free-coin-master-spin-and-coin-link_GM406889139.pdf
    • http://pro-graphite.com/images/how-to-get-free-roblox-gift-cards_GM431946152.pdf
    • http://pro-graphite.com/images/robux-com-free_GM431946152.pdf
    • http://pro-graphite.com/images/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://pro-graphite.com/images/robux-hack-free-robux_GM431946152.pdf
    • http://pro-graphite.com/images/free-robux-without-verification-2021_GM431946152.pdf
    • http://pro-graphite.com/images/how-can-i-get-free-coinsn-coin-master_GM406889139.pdf
    • http://pro-graphite.com/images/get-free-robux-info_GM431946152.pdf
    • http://pro-graphite.com/images/coin-master-mod-apk-2021_GM406889139.pdf
    • http://pro-graphite.com/images/robux-hack-no-human-verification_GM431946152.pdf
    • http://pro-graphite.com/images/coin-master-card-collection-hack-2021_GM406889139.pdf
    • http://pro-graphite.com/images/robux-adder_GM431946152.pdf
    • http://pro-graphite.com/images/rbx-free-robux_GM431946152.pdf
    • http://pro-graphite.com/images/free-minecraft-wallpaper_GM479516143.pdf
    • http://pro-graphite.com/images/classic-minecraft-net-hacks_GM479516143.pdf
    • http://pro-graphite.com/images/oprewards-com-roblox_GM431946152.pdf
    • http://pro-graphite.com/images/how-to-get-free-robux-no-scam_GM431946152.pdf
    • http://pro-graphite.com/images/how-to-hack-coin-master_GM406889139.pdf
    • http://pro-graphite.com/images/coinmaster-twitter_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000492c.bin
8aff9a5b34d9294ee742dd34532f4a9e6e77be45de4f110968dcc804854631d7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x492C 24164 bytes
font_01_sfnt_off00008057.bin
6c27acc7e1a27f4dd98d9cdf7a00649578deada87f4d5bf77ad692372392325d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8057 17988 bytes

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