Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c670a850dca2087…

MALICIOUS

PDF

48.2 KB Created: 2021-06-03 07:00:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 394cad7cd5b7df8e434e7773e15aca06 SHA-1: c2a9d643ab87cb05dfa3d2f321d749687fa26e49 SHA-256: 3c670a850dca20875730c373956166b0a7c69fd901b4883d68e59e574d3f386c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a high-confidence heuristic firing for a 'free generator / game hack' lure. The document body also contains a primary URL pointing to a game hack generator. This suggests the document is designed to trick users into visiting malicious websites, likely for phishing or to download further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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/free-coins-coin-master-hack-game-hack PDF link annotation
    • http://pustaka-smpn3tpi.com/repository/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/2021-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/daily-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/real-robux-generator_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005867.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5867 24740 bytes
SHA-256: 3b9a3e4129787a9c5ffb2eb570b13ac8e443e23a7ce858d81ce6e9d2ff88703f
font_01_sfnt_off0000913f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x913F 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off00009af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AF2 17880 bytes
SHA-256: d4b290fbe96f806a63e53895600235ad07ee700a50234ed47d5e5eeda0b1e0de

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