Malicious PDF — malware analysis report

Static analysis result for SHA-256 a167b2d8c2aae13e…

MALICIOUS

PDF

33.4 KB Created: 2021-07-04 08:33:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: af079099335ad7a701bee5591a67b14a SHA-1: 40706cbf0ad94c48c1e56eaa9b586cebf7376411 SHA-256: a167b2d8c2aae13e326e651d1da8c6da2e039c3c6734b113dad6d9f34e9ae4cf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains an embedded URL pointing to a download for a 'free Minecraft generator'. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous similar URLs suggests a phishing or malware distribution attempt. The document body, though partially corrupted, reinforces the lure of free game-related content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/free-minecraft-generator-game-hack In PDF document text
    • https://encounternepal.com/userfiles/files/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/offers-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/how-to-get-free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/hacks-for-roblox-murder-mystery-2_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://encounternepal.com/userfiles/files/minecraft-java-edition-free_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_off00002fe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE7 22116 bytes
SHA-256: 3fa1876e0edb8c7b319b4eb17a563f1f8bc6cbf5ff03588367549f722a5140fb
font_01_sfnt_off000060dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60DD 17996 bytes
SHA-256: b24aed4a6049523354c5743151cb8067e5a4c116fe9390855627cbe5cb0561b9

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