Malicious PDF — malware analysis report

Static analysis result for SHA-256 e021dd3ddc2dfdca…

MALICIOUS

PDF

36.3 KB Created: 2021-05-21 20:05:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c5606ec1b27b3cd8a327f31cf82bb26e SHA-1: dab4d375e661758efb54b28f9c295dbacd1c5630 SHA-256: e021dd3ddc2dfdca012ddd7af9238957e1af9d2ea05fb4231cf2f92bbd47eb92
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as free game hacks or generators. The ML classifier also flagged this PDF as malicious. The embedded URLs and the lure text indicate an attempt to trick the user into downloading potentially harmful content or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/minecraft-pe-free-download-game-hack In PDF document text
    • https://www.knjizara-harfa.rs/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • https://www.knjizara-harfa.rs/files/get-free-robux-no-human-verification_GM431946152.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_off00003512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3512 24516 bytes
SHA-256: 53947c8a03414ac6006794d0dda97e60bf568c96bca4458bd337fadda46944ec
font_01_sfnt_off00006c34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C34 18444 bytes
SHA-256: 41511c969eed7dcbefdd8737ff0e878d59d6c8a64165a5defd1345ec3b98e320

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