Malicious PDF — malware analysis report

Static analysis result for SHA-256 15eee367f44b54e5…

MALICIOUS

PDF

45.0 KB Created: 2021-05-13 04:21:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c18e94cbf340f30540d0780810e7cd29 SHA-1: 7152dc0da37a0350db75e781b6555cc38ef73fed SHA-256: 15eee367f44b54e5818cd433ad9bbc1785d389fe92aa7cc8e261549f9d9bdfc1
62 Risk Score

Malware Insights

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

The ML classifier strongly indicated maliciousness, and the document contains embedded URLs and a visual download button lure. The document body, though partially corrupted, contains references to 'Coin Master Free Coins' and links to sites offering free in-game currency or hacks, suggesting a social engineering lure to download potentially unwanted or malicious software. The presence of multiple URLs related to game cheats and free currency further supports this phishing-like attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/coin-master-free-coins-today-game-hack
    • https://library.um-sorong.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/how-to-get-free-robux-easy_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/mcpe-optifine_GM479516143.pdf
    • https://library.um-sorong.ac.id/repository/free-minecraft-server_GM479516143.pdf
    • https://library.um-sorong.ac.id/repository/free-robux-no-downloading-apps_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/how-to-get-free-roblox-gift-cards_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/coin-master-game-free_GM406889139.pdf
    • https://library.um-sorong.ac.id/repository/spins-gratis-coin-master-hoy_GM406889139.pdf
    • https://library.um-sorong.ac.id/repository/coin-master-free-coins-and-spins_GM406889139.pdf
    • https://library.um-sorong.ac.id/repository/link-for-free-spins-on-coin-master_GM406889139.pdf
    • https://library.um-sorong.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/codes-to-get-free-robux_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/haktuts-2021-coin-master-free-spin-link_GM406889139.pdf
    • https://library.um-sorong.ac.id/repository/pasos-para-hackear-coins-master_GM406889139.pdf
    • https://library.um-sorong.ac.id/repository/how-to-hack-roblox-accounts_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/free-games-like-roblox_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/free-robux-on-iphone_GM431946152.pdf
    • https://library.um-sorong.ac.id/repository/minecraft-alt-accounts-free_GM479516143.pdf
    • https://library.um-sorong.ac.id/repository/hack-minecraft_GM479516143.pdf
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.html
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d7e.bin
a22ce3d6775986571fe3e2e20532728816b65d91555d7a352b9344d44027a38c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D7E 23944 bytes
font_01_sfnt_off00008431.bin
c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8431 2896 bytes
font_02_sfnt_off00008e16.bin
e394056c4eb74bb544619b5782ef65607dab53e2149678f6173de5f10ac76a14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E16 18064 bytes

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