Malicious PDF — malware analysis report

Static analysis result for SHA-256 e79edbebc747e063…

MALICIOUS

PDF

36.3 KB Created: 2021-06-28 10:38:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 0ce91509effbb4378e5e3756e4ff4a13 SHA-1: 5bc1b24e93c5dd0a60b2541fe10fdb82fe9b556a SHA-256: e79edbebc747e063eccaad0b0057fdc8e8e8d58724160e3c179bc4672e0f183b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free currency, directing users to a known malicious redirector. The embedded URLs and document body content strongly suggest a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a malicious workflow designed to trick users into visiting harmful 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/roblox-hack-how-to-get-free-robux-unlimited-game-hack In PDF document text
    • http://www.alpaca-buitensport.nl/images/microsoft-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/free-abs-tshirt-roblox_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/how-ot-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/how-to-get-actual-free-robux-by-doing-nothing_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/how-to-noclip-in-roblox-cheat-engine-67_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/v3rmillion-roblox-cheat-engine-bypass_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/roblox-robux-hack-v1-34_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/free-stuff-in-roblox-catalog-2021_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/cheat-mine-simulateur-roblox_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/how-to-get-free-tix-on-roblox-no-hack_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/roblox-hack-robux-game-you-achley-get-robux_GM431946152.pdfIn PDF document text
    • http://www.alpaca-buitensport.nl/images/get-robux-com_GM431946152.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
font_00_sfnt_off00003295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3295 23256 bytes
SHA-256: 499e80a1531c2825cd19aded914f14e2971043e42e4dfa97052e93a2d71b80f0
font_01_sfnt_off000066ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66EF 19780 bytes
SHA-256: 35cd8b6a2d6e28f499884eb5863f7bb5788144d4e969d5235e85a24514aed319

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