Malicious PDF — malware analysis report

Static analysis result for SHA-256 9493b68bbe247b1f…

MALICIOUS

PDF

33.5 KB Created: 2021-07-20 13:00:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fff3f4db942851516012db9de84acf29 SHA-1: 15741e84ae0abd7c0d2eaa58d41912f3305922ef SHA-256: 9493b68bbe247b1fa3d149f646bb3d6c323c824942769267e6e1ba0264c777fd
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as free game hacks or generators. The primary lure URL is http://netcdn.tw/app/479516143/minecraft-windows-10-edition-free-download-game-hack, which is flagged as a malicious redirector. The document's content and embedded links suggest an attempt to trick users into downloading potentially unwanted or malicious software. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/minecraft-windows-10-edition-free-download-game-hack In PDF document text
    • http://schottlandfieber.de/images/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-tiktok-likes-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://schottlandfieber.de/images/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://schottlandfieber.de/images/minecraft-java-free-trial_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
font_00_sfnt_off00002cf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF5 22688 bytes
SHA-256: 7b0fc15bd9e0c4007ee8dcc9ea9e2c7f40ac03b4ab77067aa387f7ef1a855be3
font_01_sfnt_off00005f63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F63 18764 bytes
SHA-256: cc8d2d4a5b4bbe222845f4f655e2132ea290cc3fc507b9f2ca034e5c83bdcdde