Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e64c345f3717a66…

MALICIOUS

PDF

42.2 KB Created: 2021-05-12 16:03:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 695994225fcf139be06d828231ca741f SHA-1: d0d20e6854ddb2402c5b3e6c0f85060e4b9978d9 SHA-256: 7e64c345f3717a66d50cc309a832dff1e680290e72a9c3d4e0f31bd0807a3a1b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically promoting "game hacks" and "free spins" to lure users. The primary redirector URL is https://netcdn.xyz/app/406889139/get-coin-master-hack-game-hack, which likely serves as a gateway to further malicious content or downloads. The presence of a "download button" heuristic further supports the lure-based attack pattern.

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/get-coin-master-hack-game-hack In PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/hacks-minecraft_GM479516143.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/coin-master-hack-quora_GM406889139.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/give-me-free-robux_GM431946152.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/how-to-hack-coin-master-apkmody_GM406889139.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/coin-master-game-hunter_GM406889139.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.smarthealthme.com/uploaded_files/userfiles/files/coin-master-free-spins-link-download-apk_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_003_off00004a28.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A28 25096 bytes
SHA-256: 87f52282022a24b4977e109433f92f8843837aedb3ebc31bb8a09c373bfa6a3f
font_01_sfnt_off00008428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8428 17716 bytes
SHA-256: 8a0578e54c06e5eadc0c0c8832f5d62fb0328dd393573d3fab931686100c837f

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