Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a49acf7a74f44e8…

MALICIOUS

PDF

34.5 KB Created: 2021-07-19 07:30:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2e334d90b67f507a8b7935e426dfc185 SHA-1: 725203b4239667299aaf274ace0609d6e626d5b0 SHA-256: 3a49acf7a74f44e86b7703fc429a6ce149928eb217114c89e555991beca05d28
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to malicious redirectors, specifically promoting game hacks and generators. The primary lure, 'Coin Master Daily Free Spin App', directs users to 'http://netcdn.tw/app/406889139/coin-master-daily-free-spin-app-game-hack'. The presence of numerous similar links hosted on 'alroglobal.com' further indicates a campaign distributing malicious content. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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/406889139/coin-master-daily-free-spin-app-game-hack In PDF document text
    • http://alroglobal.com/images/robux-hack_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://alroglobal.com/images/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://alroglobal.com/images/tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • http://alroglobal.com/images/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://alroglobal.com/images/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/free-robux-app_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_off00002f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F5D 23560 bytes
SHA-256: 5b90b80167f1da886e5b96724cada42038f53c45ded9b1601d2245f92ea837c8
font_01_sfnt_off000064b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B9 18308 bytes
SHA-256: f9a3a46f76b0cae8a4d9bd0baf07f2a5aefd3f4554b846be65e0119e8f17791d