Malicious PDF — malware analysis report

Static analysis result for SHA-256 f98de7dfe0a2b706…

MALICIOUS

PDF

43.6 KB Created: 2021-06-08 22:22:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e0682f2021fe6cd103723ed975def27f SHA-1: b433cf1849b455c00565b0082ce406ba0329acc6 SHA-256: f98de7dfe0a2b7065235311c3be1558e8d2eae3e87c585a4bd792069cdf14961
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to game hack lures, specifically targeting popular games like Roblox and Minecraft. The primary URL, 'https://netcdn.tw/app/431946152/roblox-apocalypse-rising-hack-dll-game-hack', is flagged as a game hack redirector. This suggests the document's purpose is to trick users into visiting malicious sites, likely to download malware or engage in phishing. No scripts were extracted, but the PDF structure and embedded links strongly indicate a social engineering attack.

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/roblox-apocalypse-rising-hack-dll-game-hack PDF link annotation
    • http://library.umuslim.ac.id/repository/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/pokemon-go-free-coins-without-human-verification_GM1094591345.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/pubg-uc-shopee_GM1330123889.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/pubg-uc-zarah_GM1330123889.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/minecraft-java-free-account_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
font_00_sfnt_off00004e68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4E68 24700 bytes
SHA-256: 5d2a0fb91ce40c36169b9cb87a303bc8ca07015d5dfbd7812e27f1468868b44c
font_01_sfnt_off0000850b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x850B 19112 bytes
SHA-256: 5e92d87df6b1914bcee115c9b3438b89baa9619f2e350f7cc0047c0c0edd793e

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