Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec2ec11f687148c…

MALICIOUS

PDF

46.3 KB Created: 2021-06-03 14:29:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0e1990e21597a0ca747c45a8da0985a7 SHA-1: f2255aaad2c90f584be44bb8032c3511b998d82e SHA-256: 9ec2ec11f687148c3e8c267787f0857edfb07cd3f89044c09e946ace57946383
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a game hack redirector, specifically targeting users interested in free generators or cheats. The embedded URL, https://netcdn.online/app/479516143/minecraft-games-to-play-for-free-game-hack, is the primary indicator of this lure. While no scripts were extracted, the PDF structure and the nature of the lure suggest an attempt to direct users to a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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/479516143/minecraft-games-to-play-for-free-game-hack PDF link annotation
    • http://elibrary.perludem.org//repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/2021-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-using-cheat-engine_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-handbook_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/blox-supply-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/robux-match_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/wurst-112_GM479516143.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_off00005312.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5312 28228 bytes
SHA-256: 2951a56ee54f21ab5cedb647f779ac0f43d9ce8ea6e27970b29228fea372c427
font_01_sfnt_off000092ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92AE 18380 bytes
SHA-256: e4e6021f190597b5ba2cc648d82e873dd3d7a425745f666e69b81b8efe23a832