Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a6123a67ebf5ef1…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 07:37:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ba6530a95091b93fa75813590f3d80c2 SHA-1: c6eb73d7c5e383834fafd570bb5f211db721cfe6 SHA-256: 8a6123a67ebf5ef1e25a105956d73acde25bfbe13048ec1d4a24a6269549d3a8
82 Risk Score

Malware Insights

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

The PDF document contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a URL that promises a 'coin master hack'. The document body and embedded URLs reinforce this theme, indicating a social engineering tactic to trick users into visiting a potentially malicious site. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-32-hack-apk-game-hack PDF link annotation
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-robux-group-funds-hack_GM431946152.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/robux-free-c_GM431946152.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id//repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/pubg-uc-shopee_GM1330123889.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/www-roblox-robux_GM431946152.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/how-to-get-free-roblox-legally_GM431946152.pdfIn PDF document text
    • http://grhasurya-pustaka.smkmuh2wates.sch.id/repository/free-minecraft-accounts-reddit_GM479516143.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_off0000304c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304C 22196 bytes
SHA-256: 07a9835124d1def3c6672359737673ed7aa6bf7a3c5c72bbc3c0e8627c3fa2e3
font_01_sfnt_off0000616a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x616A 18480 bytes
SHA-256: 6f2106b72f0d236263976b3a9712b975436fb2cc304285a0ef58938fd2824524

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