Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdfeb2d1b27d211d…

MALICIOUS

PDF

40.6 KB Created: 2021-05-13 09:32:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 6ea9825ea51a8ea4e31706140989ee92 SHA-1: 8228d645479e2a72bb12ba1e54127a936d253b79 SHA-256: cdfeb2d1b27d211dc60215386d412082445c4503e440f35837e2f3833bd11a9d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one identified as a malicious redirector leading to a 'game hack' lure. The document body and embedded URLs suggest a social engineering attempt to trick users into visiting potentially harmful websites related to in-game currency or cheats. No scripts were extracted, but the presence of malicious redirector links and the lure indicate a phishing or scam attempt.

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-villages-game-hack In PDF document text
    • http://grafi-web.be/images/earn-robux-com_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://grafi-web.be/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://grafi-web.be/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://grafi-web.be/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/coin-master-cards_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://grafi-web.be/images/is-java-minecraft-free_GM479516143.pdfIn PDF document text
    • http://grafi-web.be/images/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://grafi-web.be/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://grafi-web.be/images/promo-code-free-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_off00004644.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4644 23960 bytes
SHA-256: 41528fff024c08a91bd668aeaacddfa01457567ffc019cb6b37cadc3f0fab792
font_01_sfnt_off00007c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C9B 18044 bytes
SHA-256: a8028c0297769aa7dba6e0a54b0a1dc6e5838f70d2f821663f5d8e8c2692d7c8

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