Malicious PDF — malware analysis report

Static analysis result for SHA-256 4696d68a8d86f69e…

MALICIOUS

PDF

35.6 KB Created: 2021-07-05 10:16:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: c62642fa31faf44d910a3aa6f671c319 SHA-1: 71bf8208dc526d70ac3fd9d96d67ec9778f3fa0f SHA-256: 4696d68a8d86f69edcdaad1a8330db28dc3c6e2cbabb53e5326d5865d82e45a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and cheats, such as 'coin-master-spin-hack-no-human-verification-game-hack'. These links are flagged as malicious redirectors, indicating the document is designed to lead users to potentially harmful sites. The presence of a visual download button lure further supports the malicious intent of directing users to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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-spin-hack-no-human-verification-game-hack In PDF document text
    • http://daskrimti-jabar.web.id/library/repository/getrobux-now_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/legit-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/coin-free-spin_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/cheat-engine-64-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-free-avaters_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-hack-roblox-2021-accounts_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-limited-button-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-roblox-computer-games_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-running-in-parkour-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/roblox-straight-away-cheats-for-money-on-roblox_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/claim-gg-free-robux-app-by-roblox-events_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/robux-gratis-sin-hacks_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://daskrimti-jabar.web.id/library//repository/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • 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_off00003441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3441 22852 bytes
SHA-256: 99e4160484e6fe6559bb4164c35c04179e85c7f836e2c24d5fc168aaa515614e
font_01_sfnt_off0000676c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x676C 18712 bytes
SHA-256: 6bd8c5d5e55df37c4823c99c38113fd1d5645e117952cb5bdf76cd2cbfea4fcf

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