Malicious PDF — malware analysis report

Static analysis result for SHA-256 f184427cea21acb7…

MALICIOUS

PDF

35.5 KB Created: 2021-07-03 19:12:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 522bb97796cb33bcb538beda937385bd SHA-1: 3ff7910a73ad838d8715906eafb7b90cce36c5ed SHA-256: f184427cea21acb7145e85bffc0605ca9a610044b600d8451be0264d35f415ea
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 visual download button, strongly suggesting a lure to download potentially malicious content. The ML classifier also flagged this PDF with high confidence. The document body and embedded URLs indicate a focus on Roblox-related cheats and hacks, a common theme in malware distribution.

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.tw/app/431946152/roblox-hackprogamers-com-game-hack
    • http://www.himalassociation.org/himal/ck_image/files/coin-master_GM406889139.pdf
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-no-human-verification-superfast-inspect-no-password-2021_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/how-to-change-roblox-username-for-free_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/roblox-rc7-hack-scripts-lumber-tycoon_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-without-downloading-anything_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/rbxcity-free-robux_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-legit_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/roblox-lighting-hack_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/minecraft-bedrock-for-free_GM479516143.pdf
    • http://www.himalassociation.org/himal/ck_image/files/get-free-coin-master_GM406889139.pdf
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-free-spins-2-5-2021_GM406889139.pdf
    • http://www.himalassociation.org/himal/ck_image/files/free-model-scanner-roblox_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-no-apps_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/win-free-robux_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/roblox-builders-club-free-download_GM431946152.pdf
    • http://www.himalassociation.org/himal/ck_image/files/coinmaster-spin-ml-link_GM406889139.pdf
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-hack-2021-android_GM406889139.pdf
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-free-coins-link_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033fb.bin
7510a821a9f284c2480a8f6c5423de84c4028980e4f29b0a33fe85f97a938b20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33FB 22248 bytes
font_01_sfnt_off00006586.bin
d26117ac9301c6aa9374fcae7e0fccda191402db8399675fac54987eaaf59708		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6586 19092 bytes

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