Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5da1b90403daf9e…

MALICIOUS

PDF

40.7 KB Created: 2021-05-19 01:39:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 22b955bca1c3efc433f6989ab1ba8458 SHA-1: babab35dd4314ebf1ca6b96f4ca71adbe9b49ca1 SHA-256: d5da1b90403daf9e61f69493fe595203f9f4311436d2d58380d7a571d108303c
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 game hack themes. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-tiradas-gratis-link-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a malicious redirector workflow, likely intended to deliver a second-stage payload or phish for credentials.

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-tiradas-gratis-link-game-hack In PDF document text
    • http://precisionheavyhaul.com/images/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-free-spins-2021-app_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-spins-and-coins-from-coin-master-game_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/roblox-its-free_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/daily-coin-master-link_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/minecraft-games-to-play-for-free_GM479516143.pdfIn PDF document text
    • http://precisionheavyhaul.com/images/how-to-get-free-robux-without-download-apps-or-survey_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46A0 24244 bytes
SHA-256: ca7a2bee2772814965b4a36f0b603b5b65d5039e6f60f68786208bcd920dea03
font_01_sfnt_off00007dc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DC8 17888 bytes
SHA-256: 7e3d0d6e3169ec9d1b4a39f1a8de513868e09ebca0bcabadf274b5e058877262

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