Malicious PDF — malware analysis report

Static analysis result for SHA-256 af95fdfc40dffaf3…

MALICIOUS

PDF

41.4 KB Created: 2021-05-13 19:17:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 61a2b1f77af2ffc8854fd2e19671c2a0 SHA-1: 4e80cf9b952057c9337f0a9853513eb0018b281f SHA-256: af95fdfc40dffaf356a4e125d4ed34b47c22bcd147357bf08d4ea081bc98bfee
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it's a malicious redirector lure, specifically targeting users looking for game hacks or currency generators. The document body and embedded URLs point to 'coin-master-hack-version-ios-game-hack' on 'netcdn.xyz', which is identified as a malicious redirector. This suggests the primary goal is to lead the user to potentially harmful content or further malicious sites.

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/coin-master-hack-version-ios-game-hack In PDF document text
    • https://www.devries-group.de/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-robux-clothes_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/how-to-get-free-robux-without-download-apps-or-survey_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_off000048c7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C7 24516 bytes
SHA-256: 60b2ab47027c1781515a8c1f83b1f1675dcbaf7f73a16755b9c2e14a49aafeaf
font_01_sfnt_off000080be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80BE 17848 bytes
SHA-256: 849319ab9256530e782e8f71c1ec5ce64162b8af72e859679b1a010bfb2d37d8

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