Malicious PDF — malware analysis report

Static analysis result for SHA-256 b346af02213e354d…

MALICIOUS

PDF

44.4 KB Created: 2021-05-12 01:45:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f28434343f8a990d8c545dde0fecf328 SHA-1: e206f950a3489376fff10a73aaa23889938aad51 SHA-256: b346af02213e354d4ee59f05823c58ac582b6d97908d88200ba92c1ba5f40f66
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that strongly suggest a lure for downloading game cheats or hacks, specifically mentioning 'Coin Master' and 'Robux'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that one of the primary URLs leads to known malicious infrastructure, likely serving as a downloader for a second-stage payload. The ML classifier also flagged this PDF with high confidence, supporting its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 3

  • 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/406889139/www.coin-master-hack-apk-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-daily-link-game-mod_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-master_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-hack-mobile_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000494c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x494C 24216 bytes
SHA-256: df11c51ae15d0188dfc7660e468dcd5c5cfacba68567158b3074f43287f25924
font_01_sfnt_off000080e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80E4 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008a96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A96 18320 bytes
SHA-256: 277d4dc9d3da7fddf0bdac8681ef5ee2884fa92320bcf9e925637b910761595c

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