Malicious PDF — malware analysis report

Static analysis result for SHA-256 c67321acae9db97c…

MALICIOUS

PDF

46.7 KB Created: 2021-06-04 04:36:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6d6c93bff5e04cdb67d46fa1758f636b SHA-1: e3e29ad8fe150a61c8f8043a45b2d36c77c567ef SHA-256: c67321acae9db97c2058419a4068129239838bea7831b88921a868565019652a
160 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs that redirect to known malicious infrastructure, specifically promoting 'game hacks' and 'free spins' for Coin Master. The document body, though partially corrupted, contains a URL matching the malicious redirector. The presence of these links and the ML classifier's high confidence score indicate a phishing or social engineering attack aimed at tricking users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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 https://netcdn.online/app/406889139/coin-master-free-spins-link-today-game-hack In PDF document text
    • http://pustaka-smpn3tpi.com/repository/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/nametag-fornite-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/cm-spins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/rape-simulator_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/getrobux-ninja_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-hacks-xbox-one_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/robux-for-kids_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005122.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5122 24476 bytes
SHA-256: 86e482b1800a09ec1615ac3dada1fffe070168757ae0ea718fdbef11a399003d
font_01_sfnt_off00008941.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8941 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off0000932c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x932C 18412 bytes
SHA-256: ee277532c3187caf3da016130e4cbd3fee848ac0b1174d0f40fc16c12ed3c41d

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