Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3f11784a27bbee9…

MALICIOUS

PDF

39.0 KB Created: 2021-05-23 21:35:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 03e3059c737168aeff24bd8a17a17bab SHA-1: d7419130e354a8df91c1e5db73952c6574b0522c SHA-256: e3f11784a27bbee9981e55781d3b2ebc7db7e6526855efb81316f32c74263da9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors and lures users with promises of 'free generators' and 'game hacks'. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the embedded links and the nature of the lure suggest the document is designed to lead the user to download or execute a malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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 https://netcdn.xyz/app/835599320/free-tiktok-likes-2021-game-hack In PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/price-of-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://www.tucsen.net/Public/upload/editorfiles/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003182.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3182 26016 bytes
SHA-256: c811787fde6c77e682d7b75bfc20a3a6c67c01e35a88ee824b7485d439d48a74
font_01_sfnt_off00006df8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF8 2888 bytes
SHA-256: 2f5f0fc0bc2e44a39e81df338c202d2aa9228409b57f32fbedd5805dc83e19fa
font_02_sfnt_off000077e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E9 17860 bytes
SHA-256: d258708121255352d461bbf2ed049085888c1bd8d2af1a740053385592fd2202

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