Malicious PDF — malware analysis report

Static analysis result for SHA-256 56460a156d8731c5…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 09:55:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fb1dd2c67532bb56310089041392a022 SHA-1: 44e3fa8c2734caf3239d8c9ada8647e0a07e463a SHA-256: 56460a156d8731c55ede0b30545e5a67621654471edb9210b0fac784a2c45a01
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to obtaining free Robux, a virtual currency for the game Roblox. It redirects users to the URL http://netcdn.co/app/431946152/is-it-possible-to-get-free-robux-game-hack, which is likely a malicious landing page designed to exploit user interest in game hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs and a download button lure further supports this assessment. No scripts were extracted, but the overall pattern suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/is-it-possible-to-get-free-robux-game-hack PDF link annotation
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/free-robux-working_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/free-roblox-unblocked_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/free-lvl7-full-lua-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/roblox-hack-2021-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/free-coloring-pages-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/cowboy-tshirt-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/how-to-hack-step-by-step-password-pictures-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/i-want-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/free-roblox-characters_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn8jombang.sch.id/__statics/gudangsoal/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B6 21816 bytes
SHA-256: 5dbf1640b24d0afe9cb4467510636110a3d961a21fae00212f50b5ef327920d6
font_01_sfnt_off0000619b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619B 19168 bytes
SHA-256: f24a5ada971d965804af58b04ee5b9b6367f2e4ca5c866edee18a0a4d3da7d81

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