Malicious PDF — malware analysis report

Static analysis result for SHA-256 05f944c7110563e7…

MALICIOUS

PDF

33.1 KB Created: 2021-07-20 13:19:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 54d86551c1b9ae17f8201657a4a639d8 SHA-1: aaf3557c7ee69c27fd218ad596113d30decf1031 SHA-256: 05f944c7110563e7756af336990b47f55b7b41309fb0e4b573b358edb9cfec6a
160 Risk Score

Malware Insights

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

This PDF document contains multiple links, including one to a known malicious redirector at http://netcdn.tw/app/431946152/how-to-hack-roblox-accounts-game-hack. The document body and heuristics indicate a lure for game hacks or generators, likely intended to lead users to malicious websites or download further malware. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/431946152/how-to-hack-roblox-accounts-game-hack In PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/free-tiktok-bots_GM835599320.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://e-learning.mtsn4bombana.sch.id/__statics/gudangsoal/files/free-tiktok-like_GM835599320.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_off00002b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B1C 22640 bytes
SHA-256: aee5350cc06604fca64541749f8da4961afa43f9c7236ce7d78edf0d3221408c
font_01_sfnt_off00005dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DC0 18776 bytes
SHA-256: 5ad992e62817d9be0977c850b48097300a9127a969a1336bb79e6086a3cb4c77

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