Malicious PDF — malware analysis report

Static analysis result for SHA-256 32ce9a4a31884f93…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 21:59:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c4956cbd4a52dd06792cf903d1265076 SHA-1: 1bb2c48aad8abd82a14ec13b0199d45a2c3422bb SHA-256: 32ce9a4a31884f93a1e6c3245104db58c0ae1c19ebd532a0b6d195c5c250c348
160 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a prominent external URI pointing to game hack download sites, strongly suggesting a lure for users to download potentially malicious software. The ML classifier also flagged this PDF with high confidence. The document body and heuristics indicate a social engineering attempt to trick users into downloading an application by advertising game cheats and hacks.

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/roblox-prison-life-fly-hack-game-hack In PDF document text
    • https://www.yantan.com.tw/upload/files/minecraft-xbox-one-free_GM479516143.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/free-rpg-game-ad-roblox_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/games-like-roblox-online-free_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/pasos-para-hackear-coins-master_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/robuxy-com-generator_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/every-free-item-roblox_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/roblox-walk-through-walls-hack-no-cheat-engine_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/thomas-roblox-free-games_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_off00002e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E71 22632 bytes
SHA-256: fc2b20b57aafb13d725d3a2333aff2013d8f97f84600872cdfe5d723db59b5e0
font_01_sfnt_off000060f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60F9 19276 bytes
SHA-256: 59b4058f7b29373a11bba66da173b847410027c70cd97a56dff3a8389776e36b