Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e10940ebc1bbb8d…

MALICIOUS

PDF

35.5 KB Created: 2021-07-02 02:26:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d56a168fe7eded0baa25df47f0619f16 SHA-1: 6a8e1df5270ca847c8fe64d2045434ecf3798f78 SHA-256: 7e10940ebc1bbb8d423830cded88c168b360b2b9611882939e4889d000e88feb
122 Risk Score

Malware Insights

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

The PDF document contains numerous links to external resources, many of which are related to game hacking and in-game currency. The ML classifier strongly indicated maliciousness, and the presence of a link farm suggests an attempt to distribute or redirect users to malicious content. The document body and extracted URLs indicate a lure for users seeking cheats or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/how-to-hack-people-on-roblox-easy-2021-game-hack
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-lua-roblox-exploit_GM431946152.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/black-t-shirt-roblox-free_GM431946152.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/flob-fun-robux-hack-free-robux-generator_GM431946152.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/links-to-get-free-spins-on-coin-master_GM406889139.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/minecraft-free-ios-2021_GM479516143.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-get-a-free-minecraft-account_GM479516143.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-spins-on-coin-master-iphone_GM406889139.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/what-do-you-do-when-someone-hacks-your-roblox-account_GM431946152.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/basic-roblox-hacks_GM431946152.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-robux-gift-card-codes_GM431946152.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-robux-link_GM431946152.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/hack-coin-master-pc_GM406889139.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-robux-no-verification-2021_GM431946152.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-to-sell-shirts-for-free-on-roblox_GM431946152.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/toolbox-for-minecraft-windows-10_GM479516143.pdf
    • https://lojasdoescritorio.com.br/ckfinder/userfiles/files/free-spins-and-coins-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000326b.bin
a19f7f88e3f614feacf8b0f87b56318559682ff78da44aa35d9eb3eda21201ad
pdf-font-stream PDF embedded font (sfnt) at offset 0x326B 22048 bytes
font_01_sfnt_off00006351.bin
49a192a03ac0432d2fe4a826e98a9c9d5558dd76554c95c4b32f02cda927e442
pdf-font-stream PDF embedded font (sfnt) at offset 0x6351 19732 bytes