Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ddfad775825ee72…

MALICIOUS

PDF

38.5 KB Created: 2021-05-21 04:49:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e49fbf8245343d5a6d266de5dc3bd5d6 SHA-1: d84054c8d2447ae6900687551242ba756966123a SHA-256: 5ddfad775825ee722e863f2fdd8603be56831f420a57e3fd59fd440da8af2e5a
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 game hacks and free TikTok access. The ML classifier also flagged the document as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to exploit vulnerabilities or trick users into downloading further malicious content.

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/watch-tiktok-for-free-game-hack In PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/minecraft-free-online_GM479516143.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/coin-master-online-hack-tool_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • https://pfpro.de/ckfinder/userfiles/files/androeed-ru-minecraft_GM479516143.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_off000031f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31F7 25008 bytes
SHA-256: f6aec984f2f4536ecec44a43c18f0320dece65656f99b4835df67831d1566a41
font_01_sfnt_off00006be7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE7 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off000075cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75CC 18048 bytes
SHA-256: 536dd0f2ccb369fb0f75028f7438263e518d9053b8109dbcfe1c6d16044e23ce

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