Malicious PDF — malware analysis report

Static analysis result for SHA-256 e428407017a9aaee…

MALICIOUS

PDF

46.2 KB Created: 2021-06-03 06:55:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 88839427fb277beefbf511b41e39a14b SHA-1: df7888ecde806ee4ab0d7ed192f83e4a9c05d90d SHA-256: e428407017a9aaeeb9b0b1282a83565a103b0662273e20c05e5035a7edd62a8e
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 0.9797

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.online/app/835599320/free-tiktok-followers-app-game-hack PDF link annotation
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/oginject-co_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-roebucks_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/www-robux-com_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/100-free-spins-for-coin-master-2021_GM406889139.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_off00004d23.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D23 26492 bytes
SHA-256: 8c26411da690fbd42e63d5c81bdc6c03144f5483dfdccae93f585364cabc7af6
font_01_sfnt_off00008910.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8910 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off000092c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92C3 17872 bytes
SHA-256: 34129f1c56e014fb2604607ed740d581eed4f4cd55f156cb19b3173e06165e4c

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