Malicious PDF — malware analysis report

Static analysis result for SHA-256 9041b134588bd2f4…

MALICIOUS

PDF

42.7 KB Created: 2021-05-14 09:00:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 8c6847c09511fd3a8a7f381b41ee7d24 SHA-1: e46c094b677681bcd12772ed45b01baeade372f9 SHA-256: 9041b134588bd2f4653283df1bdf383440d2e57f608cbda437be7b6c464fd24e
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a document body that explicitly advertises 'Roblox Free Clothes Hack' and links to external sites offering similar content. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple download-related lures suggests an attempt to trick users into downloading malware. No scripts were extracted, but the overall pattern is consistent with a phishing or scam document designed to deliver a 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/431946152/roblox-free-clothes-hack-game-hack
    • https://alisa.com.tw/upload/files/2021-free-spins-coin-master_GM406889139.pdf
    • https://alisa.com.tw/upload/files/free-robux-pin-codes_GM431946152.pdf
    • https://alisa.com.tw/upload/files/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdf
    • https://alisa.com.tw/upload/files/free-minecraft-java-server_GM479516143.pdf
    • https://alisa.com.tw/upload/files/free-robux-no-verification_GM431946152.pdf
    • https://alisa.com.tw/upload/files/free-robux-accounts_GM431946152.pdf
    • https://alisa.com.tw/upload/files/coin-master-hack-lost-world-2021_GM406889139.pdf
    • https://alisa.com.tw/upload/files/minecraft-pe-hacked-client-download_GM479516143.pdf
    • https://alisa.com.tw/upload/files/websites-to-get-free-robux_GM431946152.pdf
    • https://alisa.com.tw/upload/files/free-spin-today-coin-master_GM406889139.pdf
    • https://alisa.com.tw/upload/files/coin-master-hack-no-verification_GM406889139.pdf
    • https://alisa.com.tw/upload/files/300-free-spins-coin-master_GM406889139.pdf
    • https://alisa.com.tw/upload/files/can-you-download-minecraft-for-free_GM479516143.pdf
    • https://alisa.com.tw/upload/files/mcpe-master-coins-hack-download_GM406889139.pdf
    • https://alisa.com.tw/upload/files/lots-of-robux_GM431946152.pdf
    • https://alisa.com.tw/upload/files/roblox-robux-page_GM431946152.pdf
    • https://alisa.com.tw/upload/files/roblox-games-that-give-you-free-robux_GM431946152.pdf
    • https://alisa.com.tw/upload/files/free-bobux_GM431946152.pdf
    • https://alisa.com.tw/upload/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdf
    • https://alisa.com.tw/upload/files/roblox-avatar-maker-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000474b.bin
6220c6375c0cf201fc746160b8a20e099e416d1a7e600856564d37a1d0df5035
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x474B 26844 bytes
font_01_sfnt_off0000837a.bin
103feac3cc5aa8b61edffdeede0b2c422429be550018f77d71a4c0e7d6940ea7
pdf-font-stream PDF embedded font (sfnt) at offset 0x837A 18616 bytes