Malicious PDF — malware analysis report

Static analysis result for SHA-256 03ee0aae7bc0f30a…

MALICIOUS

PDF

34.6 KB Created: 2021-07-06 06:18:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: a3acd93e9463ca88a8f85b5ba7c55d84 SHA-1: f00664a497a85d0c638771fe833abea4b5439641 SHA-256: 03ee0aae7bc0f30a7bbf4d5a6ab2b7f14701f385ec49c10a54ec8beca9dfc6a3
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to game hack generators and free currency lures, including a critical finding of a link to known malicious redirector infrastructure. The document body and heuristics indicate a lure for 'Coin Master Hack' and 'Robux Hack', directing users to URLs that likely host further malicious content or exploits. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-unlimited-spins-game-hack In PDF document text
    • http://perpus.masda.ac.id/repository/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-get-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-games-hack-script-paste-bin_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-the-legendary-swords-rpg-cheats_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/popular-roblox-games-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-cmds_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/robux-hack-github_GM431946152.pdfIn macro / runtime command snippet
    • http://perpus.masda.ac.id/repository/como-hackear-roblox-2021-agosto_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-114-download_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/elfenprinz01-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/redline-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-robux-promo-codes-2021-august_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/roblox-hack-space_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/airport-in-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/rIn macro / runtime command snippet
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BE 22404 bytes
SHA-256: cd8c4835efc8affbcd0898100ad1a6bba58f3ee73f3091b0c64e2db01d5f8541
font_01_sfnt_off000062ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BA 18876 bytes
SHA-256: aa28e86df5844d54865a8c0e1e2a45292076dab41c3063256e02fdac274dd555

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