Malicious PDF — malware analysis report

Static analysis result for SHA-256 c738d8cb033a090b…

MALICIOUS

PDF

45.1 KB Created: 2021-06-03 19:50:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ea22556bcbb850b760282977c3b507c0 SHA-1: a42f79a24d9ef6147c961354e99d9bc50ddd79a3 SHA-256: c738d8cb033a090bafae2308b23988465115851237e7262d3ac26d5c6fab60dc
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/how-to-get-free-robux-2021-easy-game-hack PDF link annotation
    • http://www.rewaqousha.net/userfiles/files/free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-views-on-tiktok_GM835599320.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/hack-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-hack-app-ios_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://www.rewaqousha.net/userfiles/files/free-spins-promo-code-for-coin-master_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
font_00_sfnt_off00005023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5023 26576 bytes
SHA-256: 49c6cabdb5a2cdda30f19288241c4aa9f651e683f432d662eb14e9116eb34a5a
font_01_sfnt_off00008b06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B06 19092 bytes
SHA-256: cc4041fc50bd2ea9a1268967e32916156e3a634973a216864dd7f220ceb04504

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