Malicious PDF — malware analysis report

Static analysis result for SHA-256 f983dd569ff7ebaf…

MALICIOUS

PDF

41.8 KB Created: 2021-05-17 02:34:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0a474e43bd3ea7c729de9c1d8c9ed93a SHA-1: 902539045e5e36f5683385b0506dc20a4f416a1b SHA-256: f983dd569ff7ebafc96895c5a39b5453605f32ad725a56370598dc5d75f7b148
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a URL associated with a 'free generator / game hack' lure. The document body also contains text and a call-to-action button encouraging users to click the malicious link. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or scam attempt designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

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/406889139/free-spins-coin-master-without-survey-game-hack In 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_003_off00003b8d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3B8D 26124 bytes
SHA-256: 0b84e1b80aa910393a2657a5e695713739770df88b7bd58147c61d37ea840c88
font_01_sfnt_off0000764d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x764D 18684 bytes
SHA-256: ad7fa04790fc34b76c8e1b16c403c61c32ceaee032d5a8afb0071baf0a254118
font_02_sfnt_off00009979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9979 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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