Malicious PDF — malware analysis report

Static analysis result for SHA-256 f090cc076cfcd2ba…

MALICIOUS

PDF

35.1 KB Created: 2021-05-22 15:05:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e3155ddbbdcdaa1210d35694ad1c4342 SHA-1: 781fdabbcaaffb5ef8c18168835dac753d679581 SHA-256: f090cc076cfcd2ba5445ed0c05d0a0a506a21de1a7375d6dfecbc36d26c3c4e9
160 Risk Score

Malware Insights

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

The PDF contains multiple links pointing to known malicious redirectors, disguised as free game hacks and generators. The document body explicitly contains a call to action to 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', further reinforcing the lure. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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-mac-free-game-hack In PDF document text
    • http://picuruta.com.br/images/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://picuruta.com.br/images/free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://picuruta.com.br/images/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://picuruta.com.br/images/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://picuruta.com.br/images/how-to-get-free-robux-without-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
stream_002_off000031c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31C2 24788 bytes
SHA-256: 196eeec3bc4aec0d7edf0394cf82a58ffde82d5193669dda7d9780f9de718b56
font_01_sfnt_off00006a3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A3E 17568 bytes
SHA-256: 2778e064ee8e4e3a4bd3984a17bb7eaaeefaa41a67eb131b8ade69fe1653bbfc

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