Malicious PDF — malware analysis report

Static analysis result for SHA-256 38218a4e3bcd43a4…

MALICIOUS

PDF

33.5 KB Created: 2021-07-03 23:59:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2616e6b8a67d7ce13fa947128e57ada7 SHA-1: b934a99b074e4bed325de38bedb362bdbe0ca904 SHA-256: 38218a4e3bcd43a405e50a67fb490effa344251180c67f00272e7fc05a746339
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as 'free generators' or 'game hacks' for popular games and platforms. The primary lure is to obtain free likes on TikTok, directing users to 'http://netcdn.tw/app/835599320/how-to-get-free-likes-on-tiktok-game-hack'. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a phishing or malware distribution 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.tw/app/835599320/how-to-get-free-likes-on-tiktok-game-hack In PDF document text
    • http://jjpremiers.com/files/roblox-free-music_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/bleu-roblox-exploit-download-free_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://jjpremiers.com/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/cheats-for-bear-roblox_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-exploits-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/free-robux-hack-pa_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/roblox-fun-com-robux_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/not-a-scamhow-to-get-free-1k-robux_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/coin-master-hack-app-2021-download_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • http://jjpremiers.com/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://jjpremiers.com/files/free-spins-coins-coin-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
stream_002_off00002dc4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DC4 22648 bytes
SHA-256: 05ad2886d7ab0b60acffdc753b9742ae3ab5f18ee71b4fa93a4bff338af87d01
font_01_sfnt_off0000608f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608F 18136 bytes
SHA-256: 9be82b9e87c76be08840925351ca9f044162866092bd9222233490d8cf5a8306

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