Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d7d2c866415f7a…

MALICIOUS

PDF

48.6 KB Created: 2021-06-11 13:30:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: fd7fd5ad994be18219eb73c39c958d9d SHA-1: 74d206cf7d894b4347153785d4c07245eb36b963 SHA-256: 60d7d2c866415f7a3fe62976913da2c0f53c4e8620da9591aa8ed07c9eb23b1f
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game-related lures, such as 'Roblox Typing Cheat'. The heuristic firings indicate that these links are designed to lead users to potentially harmful content. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lures suggest an attempt to trick users into downloading or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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
  • 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/roblox-typing-cheat-to-get-money-on-blox-burg-game-hack In PDF document text
    • http://library.atim.ac.id/repository/how-can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-robux-hack-2021-online-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-speed-hack-codes_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/fray-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hacks-of-roblox-for-cmds_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-codes-2021-mobile_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-free_GM479516143.pdfIn macro / runtime command snippet
    • http://library.atim.ac.id/repository/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-robux-on-roblox-for-free-on-pc_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/mcpe-hack-client_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/frIn macro / runtime command snippet
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000050b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50B4 25252 bytes
SHA-256: 9e88753027b57a1aa7fe4edfc7c110495a78c4ae1a774c63ed2455c99c00b214
font_01_sfnt_off00008b16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B16 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off000097bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97BD 19380 bytes
SHA-256: cd8472bb7541f5da98daab706573dfdb1c7db1ac85431a52a8c36b54defe3075

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