Malicious PDF — malware analysis report

Static analysis result for SHA-256 562343225bc589db…

MALICIOUS

PDF

34.3 KB Created: 2021-07-20 13:55:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a7b76836f26fb11925613c1de2e11e7b SHA-1: 72bf3ceb500c1aa9cb3d70d3407ce76ed575ba9b SHA-256: 562343225bc589db14b0080376323af1f15fa1cd0fc8e689bbb274f29f18579b
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free items. The primary link directs to 'netcdn.tw', which is flagged as a malicious redirector. This infrastructure likely serves to download a second-stage payload or lead users to phishing pages. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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-hack-without-verification-game-hack In PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/minecraft-realms-free-codes_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/minecraft-free-download_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
stream_002_off00002f82.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F82 23312 bytes
SHA-256: 910541f0092a97203b07e4e26174f35d84626b4bd1dc5b2f9802922b3a555510
font_01_sfnt_off000063e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E6 18356 bytes
SHA-256: dc73d1475286564dbbcfd7fe1f785306788ee44bec01666c46f1ad38f7aa2791