Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f2d217a90b1603d…

MALICIOUS

PDF

37.1 KB Created: 2021-05-21 21:16:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 724465d1527936151f254da82427d7ac SHA-1: d9732ea8ec5d298c77590d7d208210861e5ef3ca SHA-256: 3f2d217a90b1603d275caaa40bbba556b02757d43dbd48e98e735e51a9383a4b
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, specifically advertising 'free likes on TikTok' and 'game hacks'. The document body also contains a call-to-action to access a TikTok generator. These links likely lead to further malicious content or exploit kits, aiming to trick users into downloading malware or revealing sensitive information. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7010

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-likes-on-tiktok-game-hack In PDF document text
    • http://stpc.it/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://stpc.it/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://stpc.it/images/free-promo-codes-roblox_GM431946152.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_off0000305e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x305E 24172 bytes
SHA-256: e80a1df8e09f217799f5c371355288aef73f7f927d83bda20582721bff089a4f
font_01_sfnt_off000067f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F5 2840 bytes
SHA-256: 0ff7203f6678b3ce5cadf82d8d4ab75daf80d11355a5b436446d16072593a6f7
font_02_sfnt_off000071b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B0 17456 bytes
SHA-256: 68a974c9aa3c870eecc965d525ccb957938ff5f02ba9183d05fa54c35671def6

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