Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ae2b252f512d7d3…

MALICIOUS

PDF

45.0 KB Created: 2021-06-04 04:39:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c0a21d4d60b481cc96b7b8e4f75010dc SHA-1: 5ca7e44201f4ab98ccfb641b44463f9a760c8e1e SHA-256: 7ae2b252f512d7d30cab83b23ad10750e201eb3b35903c69d69c17b3028c641f
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/431946152/e-free-roblox-meaing-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/with-pokemon-go-free-download_GM1094591345.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/master-game_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-apk-hack-download_GM406889139.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_off000051c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C4 25196 bytes
SHA-256: d6a89d336fefd3b15e6da46650a77edefc03dc3cc81de0f49e532eb67c871fb7
font_01_sfnt_off00008be0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BE0 18780 bytes
SHA-256: 31b154e4288cb7b58e7009ca7b5b4ec4ba01de6c3fea3e597aef86e966319ca5

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