Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1d70c68c23637ec…

MALICIOUS

PDF

31.5 KB Created: 2021-07-19 02:55:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5ace711bcc7e37fbee0534eb71614c71 SHA-1: b5ecb09169641d8c811906d89c0b8f24609a94ef SHA-256: e1d70c68c23637ec97d0669aff4fe55b8f7b9bf3c3c271b60564e486a06bbb87
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'robux hack tools' and 'game hacks'. The presence of a 'CLICK HERE TO ACCESS ROBUX GENERATOR' call-to-action button further reinforces the lure. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent. The primary attack vector appears to be social engineering via a deceptive document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9887

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/431946152/robux-hack-tools-game-hack In PDF document text
    • http://mainzer-marktplatz.de/images/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://mainzer-marktplatz.de/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://mainzer-marktplatz.de/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://mainzer-marktplatz.de/images/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://mainzer-marktplatz.de/images/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://mainzer-marktplatz.de/images/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://mainzer-marktplatz.de/images/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://mainzer-marktplatz.de/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://mainzer-marktplatz.de/images/robux-free-2021_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_off00002817.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2817 21864 bytes
SHA-256: ea2c733a8d0b6f6fa8734b62e6cac8b29df8301f564914f669f31b7b867f29f2
font_01_sfnt_off00005819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5819 18508 bytes
SHA-256: 94255c3edb8822584fac28ab17ddba486c217fd71b943d7545d5a8e460f20fbb

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