Malicious PDF — malware analysis report

Static analysis result for SHA-256 496036c5dcc2e276…

MALICIOUS

PDF

44.6 KB Created: 2021-06-07 09:06:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4953351f62753a588e6d062f9a22f850 SHA-1: 2667f46111eeb9cfa9d3a96533e344bfe758ce3b SHA-256: 496036c5dcc2e276f0055e0ebcd8514844fa209ecaf1b62453be6e6f446169c5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristic firings indicate a lure for 'free Robux' or game hacks, suggesting a phishing or scam attempt. The presence of embedded URLs and the nature of the lure strongly suggest an attempt to redirect the user to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/how-to-get-free-robux-in-a-easy-way-game-hack In PDF document text
    • http://www.teapotjewelry.com/images/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/no-robux_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/tiktok-free-comments_GM835599320.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-100-robux_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-free-spins-2021-hack_GM406889139.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_004_off00005100.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5100 24920 bytes
SHA-256: 12d54dc7f082e79f001e722439567acc89c61d86a6f92ebad9e66539a16c81fd
font_01_sfnt_off0000898d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x898D 18888 bytes
SHA-256: 0cf7053da0fcfce952f5d867af55a9ef9b4a8ddd188817c88abaa15f3f2eff32

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