Malicious PDF — malware analysis report

Static analysis result for SHA-256 b212eeb674e6e3c0…

MALICIOUS

PDF

41.7 KB Created: 2021-05-15 08:51:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 19a1eb40bd692076964cb1e13808288f SHA-1: 28cde9820edd76c036e1c3cbe6d99f7fc4b41915 SHA-256: b212eeb674e6e3c0732c5b34c21c8a328ac2c3bb397508e76050f547a28d90ef
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising "free generators" or "game hacks" for popular games. The primary lure URL is https://netcdn.xyz/app/479516143/minecraft-mobile-free-game-hack, which is designed to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to drive users to malicious websites, likely for further malware delivery or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-mobile-free-game-hack In PDF document text
    • http://tckontrola.hr/files/www-rbx-com_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/mathep_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/daily-free-coin-and-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • https://tckontrola.hr/files/how-to-get-free-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://tckontrola.hr/files/free-unlimited-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/instagram-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/coin-master-twitter-free-spins_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/how-to-get-more-robux_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
stream_003_off00004908.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4908 25124 bytes
SHA-256: f39dc63de74318f51491d0ac3af8fc7294457558cda996c9d0cd6146c434fa63
font_01_sfnt_off000081d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D2 17944 bytes
SHA-256: ce10a2b2c496b69fcf76f31cd4916c063e1dd9befde4055646c3ea28f41e8e8e

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