Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbc3602153d93013…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 22:05:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: fc437e532ac3086356bb4ec0245d8944 SHA-1: cf4c7b306fe98f85635d873df8d41e3e1051ed39 SHA-256: fbc3602153d9301307b1197aa04338c3eb606771b589d6975a75067a29086f99
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic indicating it links to a 'free generator / game hack' redirector, specifically http://netcdn.tw/app/479516143/minecraft-free-download-iphone-game-hack. This lure is designed to trick users into clicking the link, which is likely a phishing attempt or a download for malicious software. 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/479516143/minecraft-free-download-iphone-game-hack PDF link annotation
    • https://library.um-sorong.ac.id/repository/make-your-own-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/coin-master-com_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/is-there-a-way-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/my-robux_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-non-virus-recorder-for-roblox-for-laptop_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/earn-roblox_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-hack-peoples-account_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/hack-coin-master-apk-2021_GM406889139.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/roblox-free-robux-not-fake-isgd-5qok6w_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/fort-wars-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-shirt-roblox-marmelllo_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/easy-robux-today_GM431946152.pdfIn PDF document text
    • https://library.um-sorong.ac.id/repository/https-rbx-place-rewards_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3120 22948 bytes
SHA-256: 5d2c0af1646ad19d3474c0d8100f820adb2b16cd2265d85dd06fca12dab69dc4
font_01_sfnt_off00006405.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6405 18920 bytes
SHA-256: e079d7855c4dbce270202aef793088cce0f572f0ad36a45d6e5372222445917a

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