Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c6ee8606ffda90f…

MALICIOUS

PDF

48.8 KB Created: 2021-06-09 01:48:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 97c0e2e6cbc7f47a1c273f670be9c14b SHA-1: 3125e69bf5cb730b2a4c9513308ee771159aeb40 SHA-256: 0c6ee8606ffda90fefa8329feb7756745d20855e705a9c0d885755f4dc6c41bd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically promoting a 'free Robux game hack'. The document body and heuristics indicate a lure designed to trick users into clicking these links. While no scripts were explicitly extracted, the PDF structure itself facilitates the redirection, likely leading to a further stage of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.tw/app/431946152/play-games-to-get-free-robux-game-hack In PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/hack-robux-free-pc_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-cheat-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-fan-page_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-to-gift-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/hacks-for-tresure-hunt-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-daily-free-spins-link-today-2021-free_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/how-to-get-hacked-account-back-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://wolfzscriptsIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051eb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51EB 28964 bytes
SHA-256: 569c1ed7af0723ba6161680297e847f945cf20bd4522fea2bf8292a920832657
font_01_sfnt_off0000904e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x904E 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000099fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99FE 19012 bytes
SHA-256: 42a2015a47191a4be181b589deb43f69c3b10798ac573c3d5db7a469dc366e2b

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