Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbc49088a2b776ef…

MALICIOUS

PDF

41.5 KB Created: 2021-05-12 05:39:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 97e430030ee22925ef899cee5cf519d7 SHA-1: f5f04317b30437a5adf2d619717a45283bef9355 SHA-256: fbc49088a2b776eff7735bf27907fbd1111dd791a7cdb1f92b64b42f72c36713
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising free game hacks and generators for popular games like Minecraft and Roblox. The primary lure URL is https://netcdn.xyz/app/479516143/minecraft-iphone-free-game-hack, which is designed to trick users into downloading potentially unwanted or malicious software. No scripts were extracted, but the embedded links and heuristic firings strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/minecraft-iphone-free-game-hack In PDF document text
    • http://ecotherm-01.eu/images/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • http://ecotherm-01.eu/images/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://ecotherm-01.eu/images/roblox-sued_GM431946152.pdfIn PDF document text
    • http://ecotherm-01.eu/images/coin-master-hack-355_GM406889139.pdfIn PDF document text
    • http://ecotherm-01.eu/images/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://ecotherm-01.eu/images/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://ecotherm-01.eu/images/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://ecotherm-01.eu/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://ecotherm-01.eu/images/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://ecotherm-01.eu/images/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://ecotherm-01.eu/images/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://ecotherm-01.eu/images/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://ecotherm-01.eu/images/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://ecotherm-01.eu/images/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://ecotherm-01.eu/images/feb-23-2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://ecotherm-01.eu/images/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://ecotherm-01.eu/images/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • http://ecotherm-01.eu/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://ecotherm-01.eu/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://ecotherm-01.eu/images/free-robux-not-fake_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_off000047aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47AA 25312 bytes
SHA-256: 7f0cdd546c3bbb5534a60430c6d966f8f71fafd807d9a5db73b7b9a84a7a1e90
font_01_sfnt_off000080b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B1 18052 bytes
SHA-256: d64526d0e07d457868d5eac688c0bc3e5c9817b8b07646f1be3e20c76e1ff486

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