Malicious PDF — malware analysis report

Static analysis result for SHA-256 53ae2bf4eb13bd28…

MALICIOUS

PDF

34.2 KB Created: 2021-06-26 14:36:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: eb8330a63daa37e28d83a37046146bf2 SHA-1: 63f7ede664610aed87cdd18c3e3daf31b0430ca9 SHA-256: 53ae2bf4eb13bd288cc9adfe8a816919bf35b712612feda0bf5c20861dcc647c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, http://netcdn.co/app/431946152/robux-gift-card-codes-for-free-game-hack, which is disguised as a free game hack generator. The document body and embedded URLs reinforce this lure, aiming to trick users into clicking through to potentially malicious sites. No scripts were extracted, but the presence of malicious links and the lure strongly indicate a phishing or scam attempt.

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.co/app/431946152/robux-gift-card-codes-for-free-game-hack In PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/roblox-breaking-point-script-hack_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/roblox-hack-32bit_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-tiktok-views-no-verification_GM835599320.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/coin-master-hack-game-download-ios_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/how-to-get-free-robux-on-a-computer-safely_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/how-to-get-free-clothes-on-roblox-ipad_GM431946152.pdfIn PDF document text
    • https://www.anders-sofa.com.tw/uploadpic/files/free-robux-hacker-us_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
font_00_sfnt_off00002ecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ECC 22236 bytes
SHA-256: d232d48453d9d5468e80d8800ddba83fd767e0daa36c9bfdd66b67d58f6f6f51
font_01_sfnt_off0000602c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x602C 19112 bytes
SHA-256: 0ac785f13b6ebea5ac10e3f3a7e01f20ad1ba7ea72f4eb2def22e8c0be4e311f

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