Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6cd1fd053766e3b…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 05:42:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f7606f775569c9604b4107607256f260 SHA-1: 768ffd8029859dc28a2f653e7b28a20aaaaa26dc SHA-256: a6cd1fd053766e3bca4a73669b4970969b5bc748a4960da6402a3c21b481669a
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 pointing to known malicious redirector infrastructure. The document body and extracted URLs suggest a lure for game-related cheats or generators, likely a social engineering tactic to lead users to potentially harmful content or further exploitation. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent.

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/406889139/coin-master-game-hack-kaise-kare-game-hack In PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/coin-master-free-spins-bit-ly_GM406889139.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/robux-generator-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/roblox-password-hacker-2021_GM431946152.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/free-cookie-stealer-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/robloxhacks_GM431946152.pdfIn PDF document text
    • https://elearning.minkotablitar.sch.id/__statics/gudangsoal/files/promo-code-list-to-get-free-robux_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_off0000353c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x353C 22676 bytes
SHA-256: ed9e0a3739cb22aefb6cb2bfd87bdbced520f02bbfdf56de8084c801aecbfd4d
font_01_sfnt_off000067a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67A6 18264 bytes
SHA-256: a8389fbf181df9705b3255eb4c4696b43f8c72abea2faab980217b88f505b556

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