Malicious PDF — malware analysis report

Static analysis result for SHA-256 365e45966d47a0f9…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 14:36:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: e04c315ffe80328f0f3c31eba43068b4 SHA-1: 30c8c023964ce060b38e419f14cd594fa755c83b SHA-256: 365e45966d47a0f9d00f5db15c024adb98dbc7d10c6dd2fd2af81c9fb66dbb54
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/479516143/minecraft-nintendo-switch-digital-code-free-game-hack. This lure is designed to trick users into believing they can obtain free game hacks or codes. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent.

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.tw/app/479516143/minecraft-nintendo-switch-digital-code-free-game-hack In PDF document text
    • https://amazingnepaljourney.com/userfiles/files/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/how-to-hack-skywars-roblox_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/roblox-delta-hack_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/account-roblox-free-2021_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/how-to-get-free-robux-without-download-apps-or-survey_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/island-royale-roblox-hack-esp_GM431946152.pdfIn PDF document text
    • https://amazingnepaljourney.com/userfiles/files/free-24-7-minecraft-server_GM479516143.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_off000032ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32ED 22564 bytes
SHA-256: d78e314a7062a908ac6ec514320728d51fe33f948d5e31307d5c0a57ea6ae18d
font_01_sfnt_off00006505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6505 18744 bytes
SHA-256: 39428c206c609bf194df99e48b3a05aaca79100e1a0a860ab3e065a57b3738de

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