Malicious PDF — malware analysis report

Static analysis result for SHA-256 255a46d5440944c6…

MALICIOUS

PDF

46.1 KB Created: 2021-06-07 06:40:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: da06b1da3201ba0d9b95a28a5a9e43e7 SHA-1: 25b1bf30c815865628b25b85b645bf892123a460 SHA-256: 255a46d5440944c68a8e89929a876959e29fc7c5fb5fa1a18ebf80868d09239a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and external resources, masquerading as 'free generators' or 'game hacks' to entice clicks. The primary lure URL is https://netcdn.tw/app/431946152/free-2021-robux-no-human-verification-game-hack, which is flagged as a malicious redirector. The document body, though partially corrupted, contains similar luring text and URLs, reinforcing the phishing and potential malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9813

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.tw/app/431946152/free-2021-robux-no-human-verification-game-hack In PDF document text
    • http://newbeginningsranch.net/images/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://newbeginningsranch.net/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/coin-master-spins_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/coin-master-gold-cards-free_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/how-to-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://newbeginningsranch.net/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://newbeginningsranch.net/images/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/try-minecraft-free_GM479516143.pdfIn PDF document text
    • http://newbeginningsranch.net/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/mobil-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://newbeginningsranch.net/images/free-robux-hack-no-human-verification-or-survey_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_004_off00005067.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5067 26784 bytes
SHA-256: c53f60e3c85e4fd10bcf57a853b9b20dd5f388d2acf9dd83da5adeaaec293278
font_01_sfnt_off00008d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D0B 19796 bytes
SHA-256: 554ae2fd883d612564efc5a93ac827b0c4e1d9d6dc3596803c6e7dbdf8147c12

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