Malicious PDF — malware analysis report

Static analysis result for SHA-256 1aa7f68418a1d721…

MALICIOUS

PDF

33.5 KB Created: 2021-07-19 03:09:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 73410e81e7def0908651aec06468bb5c SHA-1: 4882e9889c2be79c7b36e719c12745aae530c328 SHA-256: 1aa7f68418a1d7214b1ce5ea13185bac9a8ad3b51427fa63299de3589aa455e5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to game hacks and generators, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent. The document likely serves as a phishing lure to redirect users to a site that may host further malware or exploit kits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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/479516143/will-minecraft-dungeons-be-free-game-hack PDF link annotation
    • http://jenne-technik.de/images/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://jenne-technik.de/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://jenne-technik.de/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://jenne-technik.de/images/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • http://jenne-technik.de/images/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://jenne-technik.de/images/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://jenne-technik.de/images/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://jenne-technik.de/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://jenne-technik.de/images/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • http://jenne-technik.de/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.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_off00002f6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F6D 21920 bytes
SHA-256: d98c0b613373a8649400a65d5871cb50ff91949869281a846c187327ed8444ea
font_01_sfnt_off00005f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F72 18796 bytes
SHA-256: a3e2eca43bdc685dc91cfde71aa7da7e93eda67de1cffc55b2ecd2ffb91a605f

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