Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ea9f7731e76b210…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 22:14:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 17eb40e1918d8428a34a9be25cb578ae SHA-1: c662d55459f8babff7aeed7ff0e7bd07fa8a94dc SHA-256: 8ea9f7731e76b2109d1e04b8eb30d428090e855af3d49a37df46b9de721c79e8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to redirector infrastructure, specifically targeting users with lures related to game hacks and generators. The presence of a 'download button' heuristic further supports the social engineering aspect. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it is designed to redirect users to potentially malicious websites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-game-game-hack In PDF document text
    • http://perpus.polimarim.online/repository/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spin-and-coin-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/pubg-uc-shop-qatar_GM1330123889.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/what-pubg-uc-code_GM1330123889.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/i-need-robux_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.polimarim.online/repository/free-spins-and-coins-for-coin-master-game_GM406889139.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_004_off000052bc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52BC 25552 bytes
SHA-256: 0c111fb098769725f66b79909aabd23fa53e91d28621b24d4334654739a32a70
font_01_sfnt_off00008e67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E67 17700 bytes
SHA-256: b93d612aafaf320a9faae270f9b704b5d16f035777fe6e7ab5087b19b273c749

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