Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8187dde07f5b03f…

MALICIOUS

PDF

43.3 KB Created: 2021-06-03 07:12:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6f9465ba2a3cd3201714c2a47bce54b9 SHA-1: 0c8f4fb39ccb7407f9ec62cd8e1e919b0dd14066 SHA-256: b8187dde07f5b03f501f55249044e572ffb96385e52e5bb206a8eb3251570e42
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The primary malicious URL identified is https://netcdn.online/app/479516143/free-minecraft-hacks-game-hack. This indicates a phishing or scam attempt designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/free-minecraft-hacks-game-hack In PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-do-you-getv-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/a-hack-for-roblox-tower-defence-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/free-tiktok-video_GM835599320.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/is-tiktok-free-to-use_GM835599320.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.unitomo.ac.id/repository/roblox-free-robux_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
stream_004_off00004f06.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F06 24972 bytes
SHA-256: c0c87731de0beb7648283cd2a295e16bd0412f783c99f29b6e27b6800f84aca9
font_01_sfnt_off00008854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8854 17740 bytes
SHA-256: 02673fc9b31aa1f7767db1cd16a9f6370da751ac2c2fa3ca820772adadbcecd3

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