Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab8ec474ebdc706a…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 19:10:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2a50036cb0bd4051b6025503a2c12e8c SHA-1: bddb8498358ce865a3a4b76a6ac353bb018b4722 SHA-256: ab8ec474ebdc706a64f13c4247631510c35afaf6b09360c779e5d333ce2bf3d9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple lures related to free in-game currency and hacks, such as 'Free Robux' and 'Coin Master Hack'. It directs users to the URL http://netcdn.tw/app/431946152/free-robux-that-actually-works-game-hack, which is flagged as a malicious redirector. The presence of these lures and the malicious URL strongly indicate a phishing or malware distribution attempt.

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/431946152/free-robux-that-actually-works-game-hack PDF link annotation
    • https://www.planetzoe.hr/files/cmaster-club-coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/offers-for-robux_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/roblox-retail-tycoon-cheat-engine-download-2021_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/pokemon-go-free-meltan-box_GM1094591345.pdfIn PDF document text
    • https://planetzoe.hr/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.planetzoe.hr/files/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://planetzoe.hr/files/roblox-infinite-health-hack-phantom-forces_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.planetzoe.hr/files/free-robux-2021-fevruaryu_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/free-spin-online-tool-coin-master_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/how-to-hack-server-in-roblox-script_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-daily-free-spins-link-today-2021-free_GM406889139.pdfIn PDF document text
    • https://planetzoe.hr/files/free-not-fo-sale-roblox-templates_GM431946152.pdfIn PDF document text
    • https://planetzoe.hr/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • https://planetzoe.hr/files/coin-master-hack-2021-ios_GM406889139.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_off00002da1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA1 21936 bytes
SHA-256: 849818c36dad9871d85e8d120d2f850cd43b0acb6290e7e9af3840fe8f86a986
font_01_sfnt_off00005df7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DF7 19608 bytes
SHA-256: d52712f1a35e8680be3c45e78173014feb66661a2560c5e73c6934237b8ae3d4

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