Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3eea3ce9c550415…

MALICIOUS

PDF

32.2 KB Created: 2021-07-19 02:29:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 29c4ba4477e6d369f8e90f44b88eb99b SHA-1: ab1f1cd1a0b80abca381bea3b02c5b7b091f75b0 SHA-256: a3eea3ce9c550415c41bb978017eb76236cef997e43bc7e5fa19fc833f11983d
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as "free generator / game hack" lures for popular games like Minecraft. The document body includes urgency and call-to-action phrases, reinforcing the social engineering aspect. The primary malicious URL is http://netcdn.tw/app/479516143/minecraft-online-free-download-game-hack, which likely serves as a gateway to a further payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9469

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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-online-free-download-game-hack In PDF document text
    • http://erptrends.com/images/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://erptrends.com/images/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://erptrends.com/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://erptrends.com/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://erptrends.com/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://erptrends.com/images/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://erptrends.com/images/free-minecraft-server-hosting-24-7_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_off000028eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28EB 22828 bytes
SHA-256: d3e006e1cd4076b9f742a5ba4280810d8f307e938b5e102eef19064dbe504cc8
font_01_sfnt_off00005bdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BDD 18292 bytes
SHA-256: a2a63f8c18687518d260bdaa10b8e62a526b9456f69b3d2706eff3b892369b89

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