Malicious PDF — malware analysis report

Static analysis result for SHA-256 f278330152c9653f…

MALICIOUS

PDF

43.7 KB Created: 2021-06-03 06:57:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2b0bd8a1f85ed0bc9197cdf2d26ef243 SHA-1: b2e0d1c88a1e63a8de7c607d417e33b825fcac7c SHA-256: f278330152c9653f56e0f449f771f117802021c655f89aa8ce43f5963d28d9ed
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 0.9865

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/406889139/coin-master-free-spins-haktuts-game-hack PDF link annotation
    • http://library.umla.ac.id/repository/free-robux-group_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spin-link-today-download_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/get-robux-com_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/easy-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-minecraft-realm-codes_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-hack-someones-roblox-account_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
stream_004_off00004fa7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FA7 24776 bytes
SHA-256: 9c88cc743f4cfa544403a9e97311b5db54488d204dc05bfbe88777f7973be1c5
font_01_sfnt_off000088b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B4 18196 bytes
SHA-256: 60e5d1f6f12937761343702ff54c0624bbba5eb6b748e0cd555839fa9283373b

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