Malicious PDF — malware analysis report

Static analysis result for SHA-256 61d20dde7b006d52…

MALICIOUS

PDF

35.3 KB Created: 2021-06-22 08:53:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f06aef704176c824146cbb287e63c288 SHA-1: 8671eb671920b1f4ddee17dc64b5280ae05785ce SHA-256: 61d20dde7b006d52721a6e573d450e2c2626e5e7c134231cee42d61ade8bec47
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to redirectors, masquerading as "free generator / game hack" lures for popular games like Roblox and Minecraft. The document body explicitly mentions "Free Roblox Accounts With Robux Bugmenot" and includes a call to action for a "ROBUX GENERATOR", reinforcing the phishing and scamming nature of the content. The presence of numerous links to known malicious redirector infrastructure indicates a high likelihood of this document being used to distribute further malicious content or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-roblox-accounts-with-robux-bugmenot-game-hack In PDF document text
    • http://kermas.eu/images/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/minecraft-net-free_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/robux-promo-hack_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/cheat-roblox-pass-thought-the-wall_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://kermas.eu/images/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/roblox-inspect-element-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://kermas.eu/images/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://kermas.eu/images/how-to-make-free-shirts-on-roblox-without-bc-2021_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D3 22616 bytes
SHA-256: f1b7f409e3cb68654250870da753687228ef6b1aa043007a4bb6045e0c3a8d1b
font_01_sfnt_off00006386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6386 19640 bytes
SHA-256: 9bd2cd147f7dfb8d2a93a89d2e25f48e8a890f6ab6854f5718506d494dd5353b

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