Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c05b8fe8a918860…

MALICIOUS

PDF

43.9 KB Created: 2021-04-29 13:01:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 02dba910d5afe7cea5031d6a8be904bc SHA-1: d485925cc0996cd9941790a32516fef9bef4e405 SHA-256: 3c05b8fe8a918860fbf4584520eab07a2626cfac6000b664d1f8b30af36bf8ca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors or offer 'free generators' and 'game hacks' for Roblox, indicating a likely scam or phishing attempt. The document body and embedded artifacts suggest a lure related to Roblox game exploits. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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/vortexx-free-robux-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/what-is-free-roblox-generator.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/boys-hair-roblox-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-noclip-hack-august-2021.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-xript.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-sit-fly-hack.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-hack-fairy-tail-forgotten-legend-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-rbx-bc-claims-and-generators.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/hacked-text-to-roblox.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-makes-robux-items-free.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/booster-game-pc-free-roblox.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_003_off0000417a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x417A 26244 bytes
SHA-256: 69bf65b01052e2a5a2c9dbddc882d9ef395fb6a15f24bbe5d84140dc7e2844fc
font_01_sfnt_off00007cd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CD4 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000897b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x897B 18252 bytes
SHA-256: 4001d1cea68fbaf22e4d0410300cc8003dfed932f7a4ec96cf7e8c4b382a35f7

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