Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae134a6f384267f0…

MALICIOUS

PDF

34.6 KB Created: 2021-07-01 07:19:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d6fb358374ae1ca1c1be5559aa96be6d SHA-1: df2cde618eb2b80dc8a9ed770e21b2c9b1ff4637 SHA-256: ae134a6f384267f03bce22ba99abaeed6884198f574129a32ed5d17ead4a8274
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are related to game hacks and free currency, suggesting a lure for users. The ML classifier strongly flagged this PDF as malicious, and the presence of a 'download button' heuristic further supports a malicious intent. The document likely aims to redirect users to malicious sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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-lvel-up-in-naruto-beyong-roblox-game-hack
    • https://www.summerland.com.tw/upload/files/my-minecraft-account-was-hacked_GM479516143.pdf
    • https://www.summerland.com.tw/upload/files/works-how-to-get-free-robux-2021-fast-amp_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/how-to-get-free-roblox-money_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/free-roblox-accounts_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/robux-codes-free-bots-allowed_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/win-free-robux_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/roblox-driveblox-unlimited-money-cheat_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/how-to-change-username-on-roblox-for-free_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/master-free-spin-and-coin-links-html-m-1_GM406889139.pdf
    • https://www.summerland.com.tw/upload/files/how-to-play-minecraft-for-free_GM479516143.pdf
    • https://www.summerland.com.tw/upload/files/how-to-duplicate-coin-master-spin-hack_GM406889139.pdf
    • https://www.summerland.com.tw/upload/files/free-online-games-for-pc-similar-to-roblox-no-download_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/free-spin-and-win-coin-master_GM406889139.pdf
    • https://www.summerland.com.tw/upload/files/minecraft-fly-hack_GM479516143.pdf
    • https://www.summerland.com.tw/upload/files/is-roblox-free-on-ipad_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/free-roblox-gift-cards-2021_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/roblox-dragon-ball-final-hack_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/hacker-vs-glitcher-roblox-jailbreak_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/how-to-get-free-robux-the-real-way_GM431946152.pdf
    • https://www.summerland.com.tw/upload/files/free-robux-without-offers_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ea5.bin
be09ea9ceab49756b380e7bb0bea7d1402892538e56b88ee296b413449d50eb5
pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA5 22392 bytes
font_01_sfnt_off00006091.bin
3e04973126da27aa01ba0eb30ade2376f9f85551352635d89da54344ed3fafaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x6091 19536 bytes