Malicious PDF — malware analysis report

Static analysis result for SHA-256 583f27f5c721fcca…

MALICIOUS

PDF

31.3 KB Created: 2021-07-20 00:15:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 770cfd14b01146c5271ed97c17e64cb0 SHA-1: 2bff7cbeda036380aed696068724104468f4d71e SHA-256: 583f27f5c721fcca35b1855cde37de0d509978b9aa3eddc939a7ad1994401176
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to redirector domains that host lures for "free generators" and "game hacks", such as TikTok verification or Coin Master spins. The primary link, http://netcdn.tw/app/835599320/how-to-get-verified-on-tiktok-for-free-game-hack, is flagged as a malicious redirector. The document body also contains obfuscated text and additional links to similar scam pages, suggesting a phishing or social engineering attack aimed at tricking users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9893

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-verified-on-tiktok-for-free-game-hack In PDF document text
    • http://pwpyemen.org/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/free-tiktok-likes-no-human-verification-or-download_GM835599320.pdfIn PDF document text
    • http://pwpyemen.org/images/free-tiktok-like_GM835599320.pdfIn PDF document text
    • http://pwpyemen.org/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pwpyemen.org/images/best-free-minecraft-servers_GM479516143.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_off00002938.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2938 21804 bytes
SHA-256: 100fb382e72a14e5b2dad2af5281c2b9a4f94a84691ccd702c6282d817118e38
font_01_sfnt_off00005950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5950 17928 bytes
SHA-256: e37ad39f5ad2ca92ca27a26cd5cddcc2f7e09660446c4b75033bd08f8a796cf2