Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a89f00696b0fd66…

MALICIOUS

PDF

32.3 KB Created: 2021-07-19 21:21:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: dfb66516f85a8293930ed458350f7e04 SHA-1: b48e751c1e4a797565ece318975067e1e67e78b9 SHA-256: 9a89f00696b0fd6614e7c0518f20f6368cdf9e0c2b2f79e99befca8d939a1609
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of free game items, such as 'Minecraft Realms Free Trial' and 'free robux'. The document body explicitly contains the URL http://netcdn.tw/app/479516143/minecraft-realms-free-trial-game-hack, which is flagged as a malicious redirector. This suggests the primary goal is to redirect the user to a site that likely hosts further malicious content or exploits.

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/minecraft-realms-free-trial-game-hack In PDF document text
    • http://onlinemusicsolutions.com.au/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/minecraft-free-android_GM479516143.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://onlinemusicsolutions.com.au/images/free-robux-no-offers_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_off00002b20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B20 22940 bytes
SHA-256: 5f6322ec0a36852ec44bf1a2f5af9d794ceff7d66e65647bf3d287a35b870a21
font_01_sfnt_off00005da9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DA9 17900 bytes
SHA-256: 5e9e7e4dd5050dedb25c4bef302629088f41d3cb5f82066cb4e6c0f6a9bca7dc

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