Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc14ac861d5719ea…

MALICIOUS

PDF

40.9 KB Created: 2021-05-10 14:30:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 87a18b0b1d41457e2ec98eba64a58b4f SHA-1: a938c77001476933859f3db71550f0408972d101 SHA-256: fc14ac861d5719ea7313cbdc31082d3589606667adb4e67c9a2e63de8b5f78b5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to sites offering game-related cheats and hacks, such as "free spins" and "free robux". The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs and a "download button" heuristic further supports a malicious intent. The document likely serves as a lure to download further malware or engage in other malicious activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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/free-spins-on-coin-master-2021-game-hack In PDF document text
    • https://htdvn.com/public/upload/files/free-robux-today_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-download_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://htdvn.com/public/upload/files/blogspot-free-spins-coin-master_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_003_off00004402.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4402 25976 bytes
SHA-256: 3e5ec569978b9cab86c7f7c31c4886a66dbef413e3eecc6623d3d13962acb463
font_01_sfnt_off00007dba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DBA 18288 bytes
SHA-256: e7fc04cebd192de8ea685c8f65a9790caba4d729d1f53b0455241ee170bde56f

Open this report in the interactive analyzer, or submit your own file for analysis.