Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6cd29e31412e2f2…

MALICIOUS

PDF

34.8 KB Created: 2021-06-20 01:11:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 45fd2d5feea7e62fe67ca9db728a7b43 SHA-1: 5473b161a64cf240808e5c58a6d66c5a398f310a SHA-256: f6cd29e31412e2f2de2f5e59943254142092446ace96f1eb6cfe20eec0f1a869
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free items. The primary redirector, http://netcdn.co/app/431946152/aesthetic-free-tshirts-roblox-game-hack, is a critical finding. The document's structure and embedded URLs suggest it is part of a phishing campaign designed to lead users to potentially malicious content or downloads.

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.co/app/431946152/aesthetic-free-tshirts-roblox-game-hack In PDF document text
    • http://elibrary.perludem.org/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/minecraft-bedrock-free-download-pc_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/redline-cheat-roblox-download_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/www-roblox-cheat-us-limite_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-game-hack-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/fbchampion_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
stream_002_off00002efd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EFD 23120 bytes
SHA-256: 764d7515c8bd5552f53bdfead8848c9f87d063c843772b468d558431486d936c
font_01_sfnt_off00006311.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6311 19040 bytes
SHA-256: d70fec7a4444218d8b9a20cc4eee515d1d64ada5d471575173ae3e7101752943

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