Malicious PDF — malware analysis report

Static analysis result for SHA-256 60666daa4313baf4…

MALICIOUS

PDF

33.3 KB Created: 2021-07-06 03:25:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7b08dce0617b421f754687f85e4d7efd SHA-1: 6d7b415ed06cafaf4864b96c98fe7303b7db5e10 SHA-256: 60666daa4313baf4f7625b24b6d430bdc78d276040bcfce9368dde2877761c7d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one identified as a malicious redirector. The document body and heuristics indicate a lure for free game currency or hacks, designed to entice users to click these links. The primary malicious link identified is http://netcdn.tw/app/431946152/free-robux-no-verification-at-all-game-hack, which likely leads to further malicious content or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-robux-no-verification-at-all-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/pokemon-go-free-pokeballs-2021_GM1094591345.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/counter-blox-roblox-offensive-hacks-skins_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/pokemon-go-free-stuff-codes_GM1094591345.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/pokemon-go-free-yawn_GM1094591345.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/www-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/hack-roblox-account-online_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-spins-and-coins-for-coin-master_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
font_00_sfnt_off00002f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3D 21032 bytes
SHA-256: e02a094b74fc5d49dad0a941163f27d3c67e2f5edd1a6ab62e47ab6ad8d88bec
font_01_sfnt_off00005cda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CDA 19148 bytes
SHA-256: 5a0e9190e95b53368e7cb66d96866ddf92b1f6e1c3c90a967aca3b65a401f6e9

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