Malicious PDF — malware analysis report

Static analysis result for SHA-256 67510a5ff2f48dc0…

MALICIOUS

PDF

32.3 KB Created: 2021-07-19 03:03:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 09525058b73e39151f99ed2675ece0a9 SHA-1: 7823310639727305ee6558939c52df1f09f3146f SHA-256: 67510a5ff2f48dc0f0746f37523b7e11f79b7eee6fdd4db14a5f4f3a8902beed
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appears to be a game hack or generator. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. The document body and embedded links suggest a focus on popular games like Coin Master and Minecraft, likely to exploit user interest for malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9895

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-spins-blogspot-game-hack In PDF document text
    • http://nep-operationalmanual.com/images/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://nep-operationalmanual.com/images/minecraft-life-hacks_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
stream_002_off0000284e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x284E 22664 bytes
SHA-256: 2e82d9f350c9687c0c837839152a5bcd421df79b433bb6964fae5521904761fd
font_01_sfnt_off00005ac5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AC5 18812 bytes
SHA-256: 99efaab321cd8bd4771148dad361c5d136942e4fae15d22f58752892cb19a04e

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