Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea0749a1616b60b0…

MALICIOUS

PDF

32.9 KB Created: 2021-07-21 22:23:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 13120997cb74989af8c5ea0b2b5e99f4 SHA-1: e79b7f9e865ece63aad9ca8a86f0c3bc95d396fa SHA-256: ea0749a1616b60b04fa01a271d54707f50fa8bee8374a0a9b66beffa2afbe2e9
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 a "free Robux generator" page. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful websites. No scripts were extracted, but the presence of embedded URLs and the lure indicate a phishing or scam attempt.

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/how-to-get-free-robux-with-no-verification-game-hack In PDF document text
    • https://www.wildpark-johannismuehle.de/images/minecraft-for-chromebook-free_GM479516143.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/free-minecraft-server-maker_GM479516143.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • https://www.wildpark-johannismuehle.de/images/buy-tiktok-followers-free_GM835599320.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_off00002a31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A31 22264 bytes
SHA-256: 4a37125db48a4c118c63cdf831dda79fae71a61efe94c742841749f71f8b86dd
font_01_sfnt_off00005b9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B9C 19312 bytes
SHA-256: 1dcd8f472644bbfbea9938e32028314b4c3da663e3cbf8c509e8fe1bea5d503c

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