Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf88aa6b1faafbe9…

MALICIOUS

PDF

40.7 KB Created: 2021-04-28 21:50:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 20de7b76f71668975e0c89d43b58b67d SHA-1: bc168a17d8e86bff5a4965dedd6841236b1aad62 SHA-256: cf88aa6b1faafbe9b0f27da9ae12d8db84e6b13c26b4b2ef4d9a9839309cbed5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to websites advertising 'Roblox hacks' and generators. These links are identified as malicious redirectors, indicating an attempt to lure users to potentially harmful content. The document body and heuristics confirm the use of game-related lures to drive traffic to these malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/431946152/roblox-prison-life-hacks-2021-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-play-games-for-free-descarga.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hack-knife-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-prsion-life-hacks.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-hack-on-roblox-3-simple-steps-youtube.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/robux-inspection-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-walk-through-walls-in-roblox-cheat-engine.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-666-hack-download.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-roblox-toy-codes.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/did-roblox-get-hacked-in-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-hack-on-arsenal-roblox.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_003_off00004101.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4101 25588 bytes
SHA-256: 7cd414fe4101f991419b49e1a9ac342a79881d633970baf515fe71c0aaf8961c
font_01_sfnt_off00007ba2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA2 18856 bytes
SHA-256: 17f96462cb5e38c726b7de858211f4fcbce95f8c9fe83caa03a6122e0aa1de91

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