Malicious PDF — malware analysis report

Static analysis result for SHA-256 45dcce7b2ad424f1…

MALICIOUS

PDF

47.1 KB Created: 2021-05-13 08:39:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aa67c3d0a86c30bca3bdc153cd588b35 SHA-1: 7845d47d5a02fcdea42637437d04390f9e24893f SHA-256: 45dcce7b2ad424f1a618f85b0f89cc6ed19f782afe273c10041da5af3465cfd8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains that host lures for 'free Robux' and 'game hacks', indicating a social engineering attempt to drive traffic to potentially malicious sites. The presence of embedded URLs and a critical heuristic firing for malicious redirector links strongly suggests this document is part of a phishing or malware distribution campaign. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/free-robux-websites-no-human-verification-game-hack In PDF document text
    • http://santeh-40.ru/images/roblox-website-robux_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://santeh-40.ru/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-redeem-code-free_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/boost9-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/minecraft-tower-defense-2-hacked_GM479516143.pdfIn PDF document text
    • http://santeh-40.ru/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-vip-roblox_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://santeh-40.ru/images/roblox-hacked-accounts-list_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/static-moonactive-net-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://santeh-40.ru/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://santeh-40.ru/images/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000045ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45BA 27980 bytes
SHA-256: 05be317f9a61db36f2966c38fbdcda750b980b8e0c1baeb83c404be45fe7a64c
font_01_sfnt_off00008671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8671 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9383 19056 bytes
SHA-256: b278ed256549c6e4f6c448dba943d0e72c7f64ebe7340c12334ea4705f26c648

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