Malicious PDF — malware analysis report

Static analysis result for SHA-256 59572d6225b3a200…

MALICIOUS

PDF

45.3 KB Created: 2021-05-13 13:01:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 549d91673ebc55171146ab15e71e36ae SHA-1: be969c5aa5f15e5e37f5c8c12602c97032c258d5 SHA-256: 59572d6225b3a200331e54e96dbc02d240664007b37a3b54f91237dde05e5e80
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.xyz/app/431946152/how-do-i-get-free-robux-on-roblox-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely for further malware delivery or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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-do-i-get-free-robux-on-roblox-game-hack In PDF document text
    • http://texnes-plus.gr/images/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://texnes-plus.gr/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://texnes-plus.gr/images/roblox-old-avatar_GM431946152.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/minecraft-apk-download-free-11-055_GM479516143.pdfIn PDF document text
    • http://texnes-plus.gr/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://texnes-plus.gr/images/how-to-get-robux_GM431946152.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-free-spin-app-2021_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://texnes-plus.gr/images/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://texnes-plus.gr/images/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://texnes-plus.gr/images/robux-robux_GM431946152.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/coinmasterdailyfreespins-com_GM406889139.pdfIn PDF document text
    • http://texnes-plus.gr/images/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004911.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4911 25660 bytes
SHA-256: 9050f174f8f71c4b3ee77dc0876c39888ee3678e9ee473e3deee1b369e10a6c4
font_01_sfnt_off000083c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C0 2852 bytes
SHA-256: e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f
font_02_sfnt_off00008d81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D81 18524 bytes
SHA-256: 4ccd670e6a0bad46446eeab730d71d218c542e1f5d690955267ad9a8693a3722

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