Malicious PDF — malware analysis report

Static analysis result for SHA-256 52138ae4821b6b0a…

MALICIOUS

PDF

42.7 KB Created: 2021-05-17 17:47:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7d86ef0244dfa2210edeb17ecae85547 SHA-1: 74e51a8c4b25ee0c089d871e93ba9409e47b0d12 SHA-256: 52138ae4821b6b0a5a8a8d3b6774b12e1d97153c6aa5e42783e5f5ec7ec19579
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free currency lures. The primary link, 'https://netcdn.xyz/app/406889139/how-to-get-daily-free-spins-on-coin-master-game-hack', is flagged as a malicious redirector. The document body and embedded URLs reinforce this lure-based social engineering tactic.

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/how-to-get-daily-free-spins-on-coin-master-game-hack In PDF document text
    • http://behsanroshd.com/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/win-free-robux_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/minecraft-client_GM479516143.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-app-hacks_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-hack-no-verify_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/robux-no-verification_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/moonactive-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://behsanroshd.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://coinmasterspinandcoin.comIn 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_003_off00004a8b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8B 25372 bytes
SHA-256: 983b7858e2af81f6034d1f5e8936c6963e704cab13c28874e1afd55c7faf9bdc
font_01_sfnt_off0000841a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x841A 18472 bytes
SHA-256: 39c175e238be4f7921b046c78c06fe9a00b09eca58e402890515fe03c626abe6

Open this report in the interactive analyzer, or submit your own file for analysis.