Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c8dbeb69230d9f1…

MALICIOUS

PDF

41.6 KB Created: 2021-05-13 01:39:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0617520036a3cd5d4d8b83ba51d81db3 SHA-1: 10639e6275760cd44646ac1aacc3a8144b94f687 SHA-256: 4c8dbeb69230d9f18bfc1a2b6546f17326acd77b5f64a66d0adbb1cd5a9656d8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically disguised as game hacks and free spin generators. The primary malicious URL identified is https://netcdn.xyz/app/479516143/minecraft-bedrock-hacks-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector designed to lead users to potentially harmful content, likely as part of a phishing or scam campaign.

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/479516143/minecraft-bedrock-hacks-game-hack In PDF document text
    • https://www.romedia.gr/images/coin-master-admin-free-spins_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/free-spin-coin-master-link-today_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/roblox-online-free_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-100-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/hack-coin-master-game-apk-download_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/master-hack-coin_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/wurst-115-2_GM479516143.pdfIn PDF document text
    • https://www.romedia.gr/images/get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/minecraft-pe-hacks-2021_GM479516143.pdfIn PDF document text
    • https://www.romedia.gr/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.romedia.gr/images/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/coin-master-free-spin-now_GM406889139.pdfIn PDF document text
    • https://www.romedia.gr/images/master-coin-free-spin_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_off000046b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46B6 25400 bytes
SHA-256: 72f51d06856781c07d8009a7cca11d23db03d7888830397cf60efaa5cce3b4a8
font_01_sfnt_off0000805e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x805E 18268 bytes
SHA-256: cdc10c07562964e95d3c60cab3c6d937b43618c1a43ea86bc4060c2923515875

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