Malicious PDF — malware analysis report

Static analysis result for SHA-256 4938b6b7eb2550c5…

MALICIOUS

PDF

42.3 KB Created: 2021-05-19 03:47:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6340c5e701b5aa656a9722e222c42797 SHA-1: 6a488e2cf6b939a0baf8938719710ac78dd4299b SHA-256: 4938b6b7eb2550c57bf604c3791da5a840914c2964906ea88de16bc278914642
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free spins. The document body and extracted URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely leading to further malware downloads or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-spin-today-2021-game-hack In PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/is-pokemon-go-free-on-nintendo-switch_GM1094591345.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-card-collection-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/blox-best-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/best-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-spin-link-coin-master_GM406889139.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004819.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4819 24932 bytes
SHA-256: e9dcfc7905db54b79793bad7c873e9f8df9517e8655e808e49de48193d3d7886
font_01_sfnt_off000081d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D2 18644 bytes
SHA-256: 5d92db92da7874bc6d3fe3c9cb4f688e04248e846dc14a79e6405cdf6baca0cc

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