Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6e5cac1731802fb…

MALICIOUS

PDF

45.2 KB Created: 2021-05-16 00:08:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 38602c727ff8e3de06b99bc007411477 SHA-1: e9c11109f98282fe368af1bd7381f21d11feec60 SHA-256: c6e5cac1731802fb14a9ea1939392c525291ccc2ce38608d13882f70c9086989
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-free-100-spin-link-game-hack. While no scripts were extracted, the document's structure and embedded URLs strongly indicate a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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.xyz/app/406889139/coin-master-free-100-spin-link-game-hack In PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/daily-coin-master-free-spin-apk_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-spin-coin_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-beta-free_GM479516143.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_003_off00004b41.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B41 24640 bytes
SHA-256: ecb5f2a77d076995117829be888ec67717f2f6451411dc2a8511fcba6f1df4d4
font_01_sfnt_off00008407.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8407 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00008df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF1 18336 bytes
SHA-256: 7e778ef079ae960c06ab48a136ea41e415783434fe93bdbecaa752c7fe43c00d

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