Malicious PDF — malware analysis report

Static analysis result for SHA-256 54eb8644544e9f67…

MALICIOUS

PDF

42.1 KB Created: 2021-05-10 15:08:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f2b558b82cc4802962c514ca558d0258 SHA-1: d1d34471bc8b686d61fc8e1eb7b9142bb435039a SHA-256: 54eb8644544e9f676455ba6c014dec45c5caada26e963141977d6d5133392587
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and free Robux, a common lure for malware distribution or phishing. The heuristic firings confirm these links point to known malicious redirectors and a general ML classifier flagged the PDF as malicious. While no scripts were directly extracted, the embedded URLs are the primary indicators of malicious intent, likely leading to a second-stage download or credential harvesting.

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/431946152/free-robux-no-verification-game-hack In PDF document text
    • http://jjpremiers.com/files/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.jjpremiers.com/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://jjpremiers.com/files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/robux-game-com_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://www.jjpremiers.com/files/roblox-com-hack_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000480a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x480A 24628 bytes
SHA-256: b82c8271efc35a1e33226d82d71038e337ac48569cd331b6db54aac8ecc4daea
font_01_sfnt_off00008109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8109 18600 bytes
SHA-256: 361892a278de990f6dfe9fe9f512a0ec39aeba1740037781b92f32c6ad2b5051

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