Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2cd50d1a4bc7d7c…

MALICIOUS

PDF

32.0 KB Created: 2021-07-05 18:38:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 82c6823309f11f3a0a419fe225b1dda4 SHA-1: 049288c9d5d14783a3f69d35ecd6f8d2780269e9 SHA-256: b2cd50d1a4bc7d7cd020d4b1658cf37e7bc5b5c37b490e50d951683b04a865da
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a call-to-action phrase, suggesting a phishing or scam attempt to trick users into downloading malicious files. The ML classifier also flagged this PDF as malicious with high confidence. The presence of multiple game-related lures indicates a broad targeting strategy.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/1094591345/pokemon-go-font-free-download-game-hack In PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-app-for-free-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-papers-please-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/pokemon-go-free-mewtwo-hack_GM1094591345.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/wwwcoin-master-free-spincom_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/all-free-account-roblox-obc_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/hacks-para-roblox-2021-noviembre_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-hack-commercial_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/cheat-robux-2021-pc_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-roblox-place-visits_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/christmas-tree-roblox-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/police-sim-hack-roblox_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/toolbox-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/www-coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/aimbot-for-roblox-download-free-cbro_GM431946152.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_off00002780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2780 22060 bytes
SHA-256: e6e9a2967d4eec4e851731b6c62c1fb8f1948a5b373181a01b043e90deebf83a
font_01_sfnt_off00005859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5859 19040 bytes
SHA-256: a9169f6d15a8c20e18d1f1b2ed3be45125dc7a8935b4e8c39e7d394bf33848e5

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