Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeeefd4474ff8d1c…

MALICIOUS

PDF

31.8 KB Created: 2021-07-19 21:01:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 06fe75bcb4bb41bf4e5a453ca8a47b7c SHA-1: 2ddfb56d8f9853a03f38b67e23bbd3a88bec700a SHA-256: aeeefd4474ff8d1cc5bf958a19691c19a7c410de523a31f0be94cea80f034220
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising a "free generator" or "game hack" for TikTok. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malicious content or downloads. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/835599320/get-free-followers-on-tiktok-game-hack In PDF document text
    • https://serviio.org/images/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • https://serviio.org/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://serviio.org/images/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://serviio.org/images/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://serviio.org/images/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • https://serviio.org/images/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • https://serviio.org/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://serviio.org/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://serviio.org/images/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • https://serviio.org/images/free-texture-packs-for-minecraft-pe_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_off00002ba8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA8 21984 bytes
SHA-256: 172ccc4fc78a57d1381d6f24effe2a50daa9e1c9ffb310af3b4f308121e14f08
font_01_sfnt_off00005c1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C1F 17692 bytes
SHA-256: 927e39851add4dfd479e94c7f363911e27b11f2d7b93d82bb30fff9f618b2f9d

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