Malicious PDF — malware analysis report

Static analysis result for SHA-256 11a8f64bf7693a97…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 18:56:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: cd7d1d289c2535ca853f9622d224574e SHA-1: fda5da48459aabb1fd05b7bf74005766a85277b9 SHA-256: 11a8f64bf7693a97757d799b46f607ccaebeff12cd2d86e7db838f30dc85479a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a high-confidence heuristic firing for a game hack redirect lure, pointing to the URL http://netcdn.tw/app/431946152/roblox-blue-aldias-tshirt-free-game-hack. The document body also contains this URL and other links related to game hacks and free items, suggesting a social engineering tactic to trick users into visiting a potentially malicious site. No scripts were extracted, but the primary attack vector appears to be a phishing lure within the document.

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/roblox-blue-aldias-tshirt-free-game-hack PDF link annotation
    • https://library.sman1berau.sch.id/repository/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-wurst_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/facebook-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-restaurant-tycoon-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/wurst_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/roblox-btools-hack-mac_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/redeem-code-redeemer-to-get-free-800-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hack-pc-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-spin_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/update-coin-master-free-spins_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_off0000313f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x313F 22752 bytes
SHA-256: ab5007b3353b090e8ad7efcbc924423386362f01a7c47ad608bf96636c800322
font_01_sfnt_off0000644c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644C 19168 bytes
SHA-256: 9f091f33afece537c6ff823af3ad762befa3907f6f01e0dcc3b390997126afda

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