Malicious PDF — malware analysis report

Static analysis result for SHA-256 295a76bbf378596d…

MALICIOUS

PDF

44.3 KB Created: 2021-06-11 09:53:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: acb8ab3d77dd70f4373b078e354a372a SHA-1: 3b5c202ee836404b6e7d8791c622a701026bba36 SHA-256: 295a76bbf378596d3ca77b5be4420fcf6f6dba58b58524e817466d59fb61fa72
62 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and a document body that attempts to lure users with promises of free virtual currency or game items. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple suspicious URLs indicates a likely phishing or scam attempt designed to lead users to malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/codes-to-get-robux-for-free-game-hack
    • http://casabea.de/images/coin-master-mod_GM406889139.pdf
    • http://casabea.de/images/mcpe-optifine_GM479516143.pdf
    • http://casabea.de/images/roblox-dinosaur-simulator-how-to-get-megavore-for-free_GM431946152.pdf
    • http://casabea.de/images/will-minecraft-dungeons-be-free_GM479516143.pdf
    • http://casabea.de/images/free-spin-codes-coin-master_GM406889139.pdf
    • http://casabea.de/images/how-to-get-free-robux-hack_GM431946152.pdf
    • http://casabea.de/images/free-minecraft-accounts-2021_GM479516143.pdf
    • http://casabea.de/images/free-promo-codes-roblox-2021_GM431946152.pdf
    • http://casabea.de/images/free-spins-and-coins-for-coin-master_GM406889139.pdf
    • http://casabea.de/images/100-free-spins-coin-master_GM406889139.pdf
    • http://casabea.de/images/coin-master-free-spins-heaven_GM406889139.pdf
    • http://casabea.de/images/how-to-get-free-roblox-hair_GM431946152.pdf
    • http://casabea.de/images/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://casabea.de/images/roblox-jailbreak-hack-download-ios_GM431946152.pdf
    • http://casabea.de/images/redboy-roblox-hack-download_GM431946152.pdf
    • http://casabea.de/images/free-robux-sites-that-work_GM431946152.pdf
    • http://casabea.de/images/roblox-games-browse-our-selection-of-free-online-games_GM431946152.pdf
    • http://casabea.de/images/coin-master-15-free-spin-link-today_GM406889139.pdf
    • http://casabea.de/images/coin-master-fan-hack_GM406889139.pdf
    • http://casabea.de/images/robux-hack-no-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000512d.bin
00557945afb9e7d1225cec3319fe56ff7126d2d458ed648d612963b8b22705cd
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x512D 24924 bytes
font_01_sfnt_off00008a9b.bin
69bbe09f2316f916f9537d78a80a04bab8cc2a0fff5d832be20685bce7e8f716
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A9B 18292 bytes