Malicious PDF — malware analysis report

Static analysis result for SHA-256 15e98140b7f93bf8…

MALICIOUS

PDF

40.9 KB Created: 2021-04-30 15:19:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9bd64804a6e7875b730070f4024a2dba SHA-1: 796d2054e9081d6effba83d8858a9741e64e9e49 SHA-256: 15e98140b7f93bf8fbb83e7dc7408f8ae8908904c51b4bd31c87115c577c5613
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically targeting users interested in Roblox game hacks and free currency. The document body and embedded URLs strongly suggest a phishing or scam attempt to redirect users to potentially harmful content. No scripts were extracted, but the presence of malicious links and the lure content indicate a high likelihood of user compromise.

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/free-boy-hair-roblox-catalog-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-clothes-hack-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-hack-no-download-no-human-verification.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-robux-hack-cheat-engine-64.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-robux-ads.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-ro-port-tycoon-money-cheat.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-speed-cheat.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/horizon-alpha-money-hack-may-2021-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-instantly.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-3-pastbincom.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-roblox-red-pants.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_off00003ec3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3EC3 26824 bytes
SHA-256: 68f05e0f394decb775c2a7d49af88ce3a067987e55660e31101f57daefd69ae2
font_01_sfnt_off00007c21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C21 18868 bytes
SHA-256: 515501364b98cbc583244372db4b76da145d5fa1e6623015e130d318d0afeabb

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