Malicious PDF — malware analysis report

Static analysis result for SHA-256 927b7dcb10ca8b32…

MALICIOUS

PDF

46.1 KB Created: 2021-05-14 16:02:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1513cd74a5be83a95ad6bf36c8e03f90 SHA-1: 7d6f158ec3a105d8789c6b2584b5b4e8f6d7bcf4 SHA-256: 927b7dcb10ca8b32c12a3413deef97c3db7e4664210d953b91e14ef68cd2a16c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'free generators' for popular games. The primary lure is a link to 'how-do-you-earn-free-coins-for-coin-master-game-hack', which is hosted on infrastructure associated with malicious activity. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attempt to a malicious site, likely to deliver a further payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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-do-you-earn-free-coins-for-coin-master-game-hack In PDF document text
    • https://my-private-intendant.com/images/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/avatar-roblox-game_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-free_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-hack-pro_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • https://my-private-intendant.com/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-hack-2021-no-survey_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/appsmobinfo-coinmasterhack-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://my-private-intendant.com/images/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48B4 30936 bytes
SHA-256: f868baf5be1e17936afed72ed991884e8a1bfc13e1c8f9fc0f52045ab4388b62
font_01_sfnt_off00008816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8816 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000091c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91C7 18344 bytes
SHA-256: 5806cda21877127dbf589a3d7d7b31f937fe3ba1f3a16df07ebea42887c1a658

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