Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0afc85138595e7d…

MALICIOUS

PDF

36.9 KB Created: 2021-07-05 21:54:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: db4798d6694f6c2b024b6f8df682e0d5 SHA-1: 90affe49758fab0454c7acb73a995abfebec40ca SHA-256: d0afc85138595e7dd64e3a4dff27766ba6fb536b5497c495616dc581338a6dd3
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 offers for free Robux or game hacks. One of the primary links, http://netcdn.tw/app/431946152/free-robux-only-1-step-game-hack, is identified as a malicious redirector. The document body and embedded URLs suggest a social engineering tactic to drive traffic to potentially malicious sites, likely for credential harvesting or further malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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-only-1-step-game-hack In PDF document text
    • http://jjpremiers.com/files/your-cheating-on-your-roblox-girlfriend-meme_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/free-robux-by-earning-points_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/codes-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/free-safe-roblox-injector-for-hacks_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/get-20212021202120212021202100-free-robux_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/cara-hack-pin-roblox_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/how-to-hack-peoples-account-on-roblox-2021-100_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/how-to-get-free-robux-2021-website_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/get-free-robux-now-2021_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/roblox-free-robux-giveaway-live-2021_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/boxing-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/hack-para-hacker-todo-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://jjpremiers.com/files/is-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://jjpremiers.com/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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
font_00_sfnt_off0000395b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x395B 22320 bytes
SHA-256: 4743b10e8923aaf311f907d5aed45552710547c8820412d3a2d87e834397a0e6
font_01_sfnt_off00006a5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5C 19356 bytes
SHA-256: 6203e8b6a616a7180bc9441a8d043da3f01388f0f459c4fdfb5ce8965eca2553

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