Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f66644e44eb7fe…

MALICIOUS

PDF

40.6 KB Created: 2021-05-19 16:06:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 486443296036bc13025203b7e2a98ce9 SHA-1: 6f3168fdb71e70810b2e705d9fb145811f23377b SHA-256: d2f66644e44eb7fe49db668cbfb7ba7fde922c2395519036b7d1fd2e6b2bd346
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and websites offering "free generators" or "hacks" for popular games like Roblox and Coin Master. These links are designed to lure users to potentially malicious sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 3

  • 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.
  • 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/how-to-get-roblox-premium-for-free-game-hack In PDF document text
    • http://only1you.ru/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://only1you.ru/images/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://only1you.ru/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://only1you.ru/images/coin-master-free-shield_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://only1you.ru/images/coin-master-reward-link_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://only1you.ru/images/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://only1you.ru/images/tiktok-unlimited-free-trials_GM835599320.pdfIn PDF document text
    • http://only1you.ru/images/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://only1you.ru/images/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://only1you.ru/images/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • http://only1you.ru/images/coin-master-attack-hack-apk_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://only1you.ru/images/robux-only_GM431946152.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_off00004848.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4848 26264 bytes
SHA-256: 62002c90661fa284ef3addd196d599e9c28b925656117a24e19d0e7f294741dd
font_01_sfnt_off000083a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83A6 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139