Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b9eaa763985e843…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 20:33:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2a6dfe4a65c38054168189c2a3687d1a SHA-1: 72a21d268be8cf7982eaa8663312d06f989a8775 SHA-256: 7b9eaa763985e84347ec3a21af09e8f0f600441418d99d9e0428952d3774e2a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them by promising free in-game items or currency. The primary link redirects to malicious infrastructure known for distributing malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt, likely leveraging a social engineering pretext to drive traffic to malicious sites.

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.tw/app/431946152/free-robux-app-game-hack In PDF document text
    • http://jjpremiers.com/files/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/how-to-get-free-hair-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/youtube-roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/tiktok-free-google-home-mini_GM835599320.pdfIn PDF document text
    • http://jjpremiers.com/files/how-to-get-free-robux-on-roblox-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-robux-generator-2021-hack_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/free-tiktok-like_GM835599320.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-hair-extensions-roblox_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/get-free-lp-on-roblox_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/roblox-big-paintball-hack-website_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/more-free-roblox-jailbreak-vip-servers-link-desc_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/freer-tiktok_GM835599320.pdfIn PDF document text
    • http://jjpremiers.com/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/how-do-you-hack-for-2021000-coins-on-flip-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
font_00_sfnt_off00002e7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E7B 22668 bytes
SHA-256: e583b44995bd5def69c5157a161f4d2292118031e9e898cf24a795803c9683ca
font_01_sfnt_off00006126.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6126 18892 bytes
SHA-256: 98799f5422297995f0985cb1c378b21e0f8722881e70436717831cdef5a17d10

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