Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a63713c73c9fd1d…

MALICIOUS

PDF

46.2 KB Created: 2021-05-12 22:41:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 499289b226df7e0a4d5687f4aab0c39d SHA-1: 24749599395f34f03f4cbd2e68066cb6af757926 SHA-256: 2a63713c73c9fd1daf0e2d1f9773805a7701c83b3a8a9adff18b4c4c61190807
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded URLs that lead to known malicious redirector infrastructure, specifically targeting users interested in game hacks and free in-game currency. The ML classifier also flagged this PDF with high confidence. The primary malicious activity observed is the redirection to potentially harmful websites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/431946152/how-to-get-hacks-on-roblox-game-hack In PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/rbx-roblox_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/best-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/real-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/cm-spins_GM406889139.pdfIn PDF document text
    • http://www.vetmed.fkh.unair.ac.id/repository/hack-coin-master-game-download_GM406889139.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://vetmed.fkh.unair.ac.id/repository/free-robux-no-verification_GM431946152.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_off00004a1d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A1D 26456 bytes
SHA-256: 25b2c72812b2344823a3c0b9a22e13cac9831dcbaa7e382e3de1d7d60df71502
font_01_sfnt_off00008714.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8714 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00009124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9124 18452 bytes
SHA-256: ed539d80bc369dd702df4747cf339a34006ca6a67146fd9e518381a10bf40547

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