Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d3e728e041fe4bd…

MALICIOUS

PDF

32.1 KB Created: 2021-07-21 12:41:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3d799cf2203eab7f973462702b1139cc SHA-1: ada6752789675e747f21ff8cc19e1272683db678 SHA-256: 2d3e728e041fe4bdd66bd79d1403c4cf049ddfae2518d9ffaa1309131cb63107
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links and a call-to-action to a URL associated with malicious redirector infrastructure, likely serving as a lure for game hacks or free currency. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs further supports a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and embedded links indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/free-robux-survey-game-hack In PDF document text
    • http://genialica.de/images/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://genialica.de/images/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://genialica.de/images/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://genialica.de/images/minecraft-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_off00002ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AD4 21856 bytes
SHA-256: a7153308bf9ff02e3cbf54fbc5631fe645b951ce217275e6cfb8c2f01f153e3c
font_01_sfnt_off00005ad4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AD4 18496 bytes
SHA-256: d3f36d4101fb5e75cf0387f294baf635f0b832cdc5c917c0c18760a2975165f8

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