Malicious PDF — malware analysis report

Static analysis result for SHA-256 22bc4b8ae6048ff8…

MALICIOUS

PDF

41.4 KB Created: 2021-05-17 07:02:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2767f81c0a9ff0406c34ced4e9816f12 SHA-1: 06bcfed0d5abcf921926716d384fd8ff7f0c7396 SHA-256: 22bc4b8ae6048ff8432bf89b62899d4e5632cbad935a8ca765bf4dab3eb23ea8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and other PDFs, masquerading as game hacks and generators. The primary redirector URL is https://netcdn.xyz/app/406889139/play-coin-master-game-hack, which likely serves as a gateway to further malicious content. The ML classifier strongly indicated maliciousness, and the presence of multiple redirector links reinforces this assessment.

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/play-coin-master-game-hack In PDF document text
    • https://and.co.id/assets/CKImages/files/roblox-login-hack_GM431946152.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/free-roblox-executor_GM431946152.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/roblox-e-free_GM431946152.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/113-hacked-client_GM479516143.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/robux-gratis_GM431946152.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/complete-offers-for-robux_GM431946152.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/free-robux-real_GM431946152.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://and.co.id/assets/CKImages/files/info-roblox-com-robux_GM431946152.pdfIn 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_off00004848.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4848 24644 bytes
SHA-256: 26d02664c2a911cc8249e78c4ff3ac1409f61b5f9333b5d4cde51c101cca4550
font_01_sfnt_off00008043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8043 17956 bytes
SHA-256: 3643e479f0c37cbf16fafc1a8fc3121dcb1ff233e4f2886a877cfbec5145750a