Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c40039ed9c8743d…

MALICIOUS

PDF

35.2 KB Created: 2021-06-18 16:54:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8a4f99eb61f1fdc6978fa308c2e392cb SHA-1: a788795ec60a2e7b1d3c198b4e5aa28903b5f14b SHA-256: 1c40039ed9c8743d2a842e9dbe1a570a2f5c9a93a7b9a739e5039a4dad22e617
62 Risk Score

Malware Insights

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

The document contains numerous embedded URLs and a prominent external URI pointing to sites offering game hacks and free currency, consistent with a phishing or scam lure. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a "download button" heuristic further supports the malicious intent of directing users to external resources.

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/money-hack-for-roblox-vehicle-simulator-game-hack
    • http://dana1157.com/images/minecraft-mods-download-free_GM479516143.pdf
    • http://dana1157.com/images/master-coin-free-link_GM406889139.pdf
    • http://dana1157.com/images/free-tiktok-bots_GM835599320.pdf
    • http://dana1157.com/images/hack-coin-master-iphone_GM406889139.pdf
    • http://dana1157.com/images/how-to-get-free-robux-on-roblox-easy-2021_GM431946152.pdf
    • http://dana1157.com/images/500-free-coin-master-spins_GM406889139.pdf
    • http://dana1157.com/images/free-robux-no-verification-or-survey-2021_GM431946152.pdf
    • http://dana1157.com/images/free-robux-without-verification-2021_GM431946152.pdf
    • http://dana1157.com/images/20210-robux_GM431946152.pdf
    • http://dana1157.com/images/how-to-get-btools-and-speed-hack-in-roblox-jailbreak_GM431946152.pdf
    • http://dana1157.com/images/free-robux-download_GM431946152.pdf
    • http://dana1157.com/images/hack-para-tener-robux-enderrobux-117_GM431946152.pdf
    • http://dana1157.com/images/coin-master-free-spins_GM406889139.pdf
    • http://dana1157.com/images/play-minecraft-pocket-edition-for-free_GM479516143.pdf
    • http://dana1157.com/images/roblox-parkour-point-hack_GM431946152.pdf
    • http://dana1157.com/images/how-to-hack-roblox-accounts-passwords_GM431946152.pdf
    • http://dana1157.com/images/games-like-minecraft-but-free_GM479516143.pdf
    • http://dana1157.com/images/how-to-get-free-robux-on-phone_GM431946152.pdf
    • http://dana1157.com/images/free-online-spins-coin-master_GM406889139.pdf
    • http://dana1157.com/images/how-to-get-free-clothing-on-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000308e.bin
961722d2d2f288db304b81d2df7800394e526982d68d832a67d2c66541811371		 pdf-font-stream PDF embedded font (sfnt) at offset 0x308E 22300 bytes
font_01_sfnt_off0000625e.bin
d5d857b76d6ef1f90e03266e65ed1bb5b32b31b2668b862fb52106ef53099394		 pdf-font-stream PDF embedded font (sfnt) at offset 0x625E 19936 bytes

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