Malicious PDF — malware analysis report

Static analysis result for SHA-256 6563b6f73ad66eda…

MALICIOUS

PDF

46.5 KB Created: 2021-05-13 08:33:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a579da949a1da6bde2442b1b415741f0 SHA-1: d18c3632c085766a4de46d2ed2cbe1a6d3a790cd SHA-256: 6563b6f73ad66eda255399dce0533c16c163521a98854dd6f53cfe34edfafb76
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising free game currency and hacks. The primary lure URL, 'https://netcdn.xyz/app/431946152/how-to-get-free-robux-fast-game-hack', is associated with malicious redirector activity. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or scam attempt, likely intended to lead users to a malicious site or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/431946152/how-to-get-free-robux-fast-game-hack In PDF document text
    • https://kimolos-link.gr/images/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/mine-minecraft-games-for-free_GM479516143.pdfIn PDF document text
    • https://kimolos-link.gr/images/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/how-to-get-free-spins-on-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/free-robux-videos_GM431946152.pdfIn PDF document text
    • https://kimolos-link.gr/images/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/download-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://kimolos-link.gr/images/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • https://kimolos-link.gr/images/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://kimolos-link.gr/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/coin-master-free-spins-apk-2021_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://kimolos-link.gr/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://kimolos-link.gr/images/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A0 26092 bytes
SHA-256: 0a79bda522644def1cd7f7b3d7eea529bda07249a6631eed89c47d37ab22760d
font_01_sfnt_off00008553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8553 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9265 18512 bytes
SHA-256: 7aab2f7b5cdd23eaead05a2c9912e4a9dcd99cb50fd9423eae012b149ac71853

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