Malicious PDF — malware analysis report

Static analysis result for SHA-256 b70a454fe9efaa8d…

MALICIOUS

PDF

32.5 KB Created: 2021-07-21 16:35:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 698bae0526bd8bdcede5e893bc356042 SHA-1: e66929825fff8213334aadedcd9e02262bdec81f SHA-256: b70a454fe9efaa8d1c1916444e218d1085d47d3e911c01e5a657e2c2fcbf12aa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, that lure users to download "free generators" or "game hacks". The document body explicitly contains the URL http://netcdn.tw/app/479516143/free-modded-minecraft-server-game-hack, which is also flagged by heuristics as a malicious redirector. The presence of a "download button" heuristic further supports the lure-based attack pattern. No scripts were extracted from this sample.

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/479516143/free-modded-minecraft-server-game-hack In PDF document text
    • https://www.elevage-chiot.fr/images/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/free-robux-app_GM431946152.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/free-tiktok-video_GM835599320.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://www.elevage-chiot.fr/images/free-minecraft-survival-server_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_off00002b1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1D 22660 bytes
SHA-256: 76af85e07220d7119316ea74c48023f28d4622721a935089ad3ea3d21d82935e
font_01_sfnt_off00005dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DCC 18000 bytes
SHA-256: 088756902f929cbb0d1c0fa5d7f6f3d7dd891fd3cb3329064cb278e0751f8302