Malicious PDF — malware analysis report

Static analysis result for SHA-256 17cb70c64427e2cc…

MALICIOUS

PDF

45.0 KB Created: 2021-06-11 06:02:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ec6d3c60e26b01ad11b6e11d6f535ff3 SHA-1: 3a48494ab3b68c5689cfb18194ebd1f4279d769a SHA-256: 17cb70c64427e2cc02f0a26d165a49a4afa59e2db8acf303228e4a925e7dd6c1
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.tw/app/431946152/how-to-get-free-robux-no-human-verification-2021-game-hack PDF link annotation
    • http://digilib.iailm.ac.id//repository/getrobux-info_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roam-openworld-roblox-games_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/dayz-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/minecraft-free-play-now_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-hack-on-dell-computer_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-do-i-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-free-minecraft_GM479516143.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
stream_004_off0000503b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x503B 25024 bytes
SHA-256: e769b0b08200aada258278806dd4a80fc4fce9fae4411d4032240363d72c276a
font_01_sfnt_off000089ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89EC 19428 bytes
SHA-256: dc7c459a90b1a398d2ee51f52972ed8a07904c77cd045887558a99bdb9823e3c

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