Malicious PDF — malware analysis report

Static analysis result for SHA-256 e88902e7e7a73f5a…

MALICIOUS

PDF

51.1 KB Created: 2021-06-09 02:40:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: edaf1aca4a49817020b25132d4b0aadc SHA-1: 648254b3be6a92a03b767fd6519c82064848a3bf SHA-256: e88902e7e7a73f5a66c4c89f75d58f141a14e5179100f4408498940ccf8c729b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9724

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 https://netcdn.tw/app/431946152/free-script-executor-roblox-2021-no-virus-game-hack PDF link annotation
    • https://learnwmf.org/image/data/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/tiktok-free-jeton_GM835599320.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/tiktok-free-download-for-android_GM835599320.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/master-coin-free_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/e-free-roblox_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-exploits-for-roblox_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/can-someone-hack-you-if-you-report-on-roblox_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/minecraft-dungeons-free_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52B9 27632 bytes
SHA-256: 37170c71ed8cf00a1d032f65e1a97b9dc5233c906334c254bef6da8c290d40c0
font_01_sfnt_off00009175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9175 7272 bytes
SHA-256: f462303657ce1de10d3e7d5ae1fe17c8584116bd5bc216971166de87266da924
font_02_sfnt_off0000a2e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2E6 19024 bytes
SHA-256: 7d6c20d33332e2252631c00df7a084c4d79482e19daae0179e9b71a64f346c97

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