Malicious PDF — malware analysis report

Static analysis result for SHA-256 c129ac791a10742f…

MALICIOUS

PDF

34.9 KB Created: 2021-06-20 08:55:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d2d93c39ffedb473e6e56eefd91f352a SHA-1: 7b8e2f856a06bd79cae03222d826f2c79f2a0eb1 SHA-256: c129ac791a10742f5105fc35628bea491d840c51cc67103396bdaee9f6c42d46
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to a redirector service that hosts game hacks and cheats, aiming to lure users into downloading malicious scripts. The heuristic firings indicate the PDF is designed to exploit user interest in free game items, leading them to potentially malicious download sites. No scripts were extracted, but the presence of embedded URLs and redirector links strongly suggests an attempt to download and execute a second-stage payload.

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.co/app/431946152/installer-script-roblox-hack-gui-game-hack In PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/roblox-gui-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/code-cheat-roblox-to-tchat_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/pokemon-go-free-candy-hack_GM1094591345.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/infinite-robux_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-gamepass-on-roblox_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/is-it-really-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/free-robux-no-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/free-likes-for-tiktok_GM835599320.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/roblox-controversy_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/minecraft-free-apk_GM479516143.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/roblox-top_GM431946152.pdfIn PDF document text
    • https://pn-negara.go.id/new/public/ckfinder/userfiles/files/los-mejores-hacks-para-roblox_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_off00003259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3259 21904 bytes
SHA-256: 2f514b60ecc0604ba2155db6c2f40056e0b69ca8068d34e2bfb4680cc826b6a7
font_01_sfnt_off000062cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CC 19196 bytes
SHA-256: 20c353e2efa713836bf334eec4c4aeebb1827d412b1bebdd6c6b75b8cb1aa86a

Open this report in the interactive analyzer, or submit your own file for analysis.