Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d5ab66276dd7b3c…

MALICIOUS

PDF

46.3 KB Created: 2021-05-14 14:15:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0b7f9a8030d847c45487ec088502ca2b SHA-1: 576c6b6a8b466eecd1cfc1c06e8a717fc22aee1c SHA-256: 6d5ab66276dd7b3c41c54d7b36f48d4f22ea83342336c1141e48603a18201904
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free robux' or 'game hacks' to lure victims. The primary redirector identified is https://netcdn.xyz/app/431946152/rbx-free-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristics indicate a malicious redirection workflow, likely intended to lead users to further malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9278

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/rbx-free-robux-game-hack In PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/juego-hackeado-de-coin-master_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/minecraft-hacks-xbox_GM479516143.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-attacks-coin-master_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-link-today_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-ad_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/coin-master-support_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://apostolosandreaslemesou.com/images/free-spin-link-in-coin-master-game_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_off0000497e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x497E 25844 bytes
SHA-256: b511e33422bd064687dde9e68a7ae7d93a75f371de84d31d942a33184e5a4366
font_01_sfnt_off00008620.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8620 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009331.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9331 18012 bytes
SHA-256: 03f7603bc8a5695bbd0c39958af3fcfd5a932cbc13eba7563a8e8ca8b5ca4208

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