Malicious PDF — malware analysis report

Static analysis result for SHA-256 312f343f1f1178ad…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 06:46:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8c6bbd49b523a6045f84231511615a2c SHA-1: f3774e5399031b960d186ccf2a7eb34c2faa502f SHA-256: 312f343f1f1178ade0839bf687279a4fd586066a6f4c5ac3bae13c26217a4e14
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one pointing to known malicious redirector infrastructure at "https://netcdn.xyz/app/406889139/40-free-spins-coin-master-game-hack". The document body and heuristics indicate a lure for game-related cheats or currency, likely a social engineering tactic to drive traffic to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a malicious workflow, possibly involving JavaScript for redirection or further exploitation.

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/406889139/40-free-spins-coin-master-game-hack In PDF document text
    • http://www.evaplast.by/images/coin-master-free-gold-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/coin-master-email-free-spins_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/codes-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.evaplast.by/images/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.evaplast.by/images/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/google-moon-active_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • http://www.evaplast.by/images/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • http://www.evaplast.by/images/free-coins-and-spins-coin-master_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004880.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4880 26236 bytes
SHA-256: eebb305df889b8afb153b32f05d2c1882f8e2eedb8227ccfe4c223beb64faf44
font_01_sfnt_off000084d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D4 18120 bytes
SHA-256: adc3b494d1fa0974f6acdf3c8a88f4cec1eca3c3c07b4c24b7a089c53791e33f

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