Malicious PDF — malware analysis report

Static analysis result for SHA-256 347635958ad41f0f…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 20:07:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 1ed1ec423083246c12aa25f75119db5d SHA-1: e5ff73b478ed4190ed4f635cf82bba141fb84ed7 SHA-256: 347635958ad41f0f9990a2a5dfe302e64406457a13a4b5fc2725741aadea328b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a 'free generator / game hack' redirector lure, pointing to a suspicious URL. The document body also contains this URL, reinforcing the lure. While no scripts were explicitly extracted, the nature of the lure suggests an attempt to trick the user into downloading a secondary payload, aligning with common phishing tactics.

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.tw/app/431946152/free-robux-thumbnail-game-hack PDF link annotation
    • http://lib.baruna-husada.ac.id//repository/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/coin-master-free-spin-bonus_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/minecraft-free-download_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/pokemon-go-free-spoofing_GM1094591345.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/hack-para-tener-robux-gratis-2021_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/proxo-cheat-roblox-download_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/game-toolbox_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/grabpoints-robux_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-coin-master-spins-daily_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_off00003067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3067 22736 bytes
SHA-256: b3ef5153d664ee97234161792a49aba11bc1c14171e6a4b688c9cf654e8a7d18
font_01_sfnt_off0000630f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630F 19336 bytes
SHA-256: adbfa614176d12f8fda67e6e8d5b73dbc28431768a4cac05a3d314a7f167f1c3

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