Malicious PDF — malware analysis report

Static analysis result for SHA-256 58b38b5267ab8797…

MALICIOUS

PDF

42.8 KB Created: 2021-06-03 07:16:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 43c0d8b533390de9ca8cf542b99ae58b SHA-1: 39ee25826c9d2391ff1d98d49bb4b29e89db62c1 SHA-256: 58b38b5267ab879729cab2ea3b793d5b2f36a8a956092f4bec6d4995fba8e071
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to a URL associated with game hacks, specifically 'coin-master-coins-game-hack'. This lure is designed to trick users into visiting a potentially malicious site. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent. No scripts were extracted, but the presence of malicious links suggests a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9874

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/coin-master-coins-game-hack PDF link annotation
    • http://lib.unar.ac.id/repository/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/free-roblox-executor-no-key_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/pubg-uc-100-bonus_GM1330123889.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/roblox-games-with-free-boombox_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id//repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.unar.ac.id/repository/coin-master-daily-free-coins-link_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
stream_004_off00004f6a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F6A 24188 bytes
SHA-256: 1c5b7710396fae2830610a638b467057c3ada75d540e765a30b4a65129311536
font_01_sfnt_off000086cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86CD 17544 bytes
SHA-256: 5ee316c89f58fa7ece53e10d1822e70a80b2e7ece9f31707ca69690d36fdc75d

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