Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5e43210828e545f…

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 17:45:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e74e8da6022bafc3ab963dd1d48e3278 SHA-1: 1238ad78438648514ca311e5e562f90d2e0b3d75 SHA-256: c5e43210828e545feaa9fb37b24a6a81ca7585faa07cb06eed8fcf79e2b153f9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to known malicious redirectors, specifically disguised as game hacks and generators. The primary malicious URL identified is https://netcdn.xyz/app/406889139/fbchampion-game-hack, which is repeatedly referenced. The presence of a "download button" heuristic further suggests a deceptive workflow intended to trick the user into clicking the malicious link. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/fbchampion-game-hack In PDF document text
    • https://www.romedia.gr/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.romedia.gr/images/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • https://www.romedia.gr/images/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/minecraft-client-download_GM479516143.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/free-robux-no-email_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/plug-toolbox-for-minecraft-free-ios_GM479516143.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_off00004a96.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A96 25596 bytes
SHA-256: 26676dfe6e2e59602077173e39952579cfada29210d66938acaa68eadae226a1
font_01_sfnt_off00008474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8474 18364 bytes
SHA-256: a6b0af27d4d3b45433f1bf9322c4fc5530f0836706fea914cb1eef9ee3408c10

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