Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c16cac92c1004f0…

MALICIOUS

PDF

33.6 KB Created: 2021-07-19 19:50:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 52d2e319d4bc911434d9b243e2cc0716 SHA-1: 47fe8a9cb8cd455a7fbaa537f12e58f8b9540032 SHA-256: 0c16cac92c1004f0233bee3ff6b9f9a9d45d945acd378e46367f661b289af237
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one that redirects to known malicious infrastructure. The primary lure is a 'free generator / game hack' for Minecraft, designed to entice users to click the malicious link. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for further malicious actions, such as downloading a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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/how-to-get-minecraft-java-edition-for-free-game-hack In PDF document text
    • http://www.hhls.com.au/images/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
    • http://www.hhls.com.au/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.hhls.com.au/images/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://www.hhls.com.au/images/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://www.hhls.com.au/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.hhls.com.au/images/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.hhls.com.au/images/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • http://www.hhls.com.au/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.hhls.com.au/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.hhls.com.au/images/minecraft-noob-vs-pro-vs-hacker-vs-god_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_off00002d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D09 23212 bytes
SHA-256: 346fd4272fa641bbcb4d2da996b74af536027f12f1ebf50b176bc02db312ddf5
font_01_sfnt_off00006168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6168 18328 bytes
SHA-256: a790f51109e75a7469d42ca78e2bb2ee6ca1fa0985c1c579ea7802a52011e373

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