Malicious PDF — malware analysis report

Static analysis result for SHA-256 edfb1bfc1258b04d…

MALICIOUS

PDF

34.4 KB Created: 2021-06-29 06:56:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 571fb774eaf5ffa1518421bd9300af14 SHA-1: c95343960ee63973257f2d461035ec69d694257f SHA-256: edfb1bfc1258b04d41346cc469a66553e249e1365cb1cf575bfc584603d6de97
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on what appears to be a game hack or generator. The primary link, http://netcdn.co/app/431946152/roblox-minigunner-free-robux-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at driving traffic to potentially malicious 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-minigunner-free-robux-game-hack In PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-tix-dominus-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-anti-speed-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-codes-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/combo-free-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-2021-xtill-working_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hacker-names-for-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/top-10-type-hacker-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/ban-script-hack-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-hack-tool-download_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-the-er-face-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-snow-shoveling-simulator-free-santa-bag-inf_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/daily-spin_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hack-chip-assassin-roblox_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_off00003029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3029 22244 bytes
SHA-256: f08ac18305b7784eaf01018222aede50e5412b270c8f44de24b626071d984e27
font_01_sfnt_off00006190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6190 19104 bytes
SHA-256: 12b18b5fe9b9c9218ec0e47f61218aecee6ed1dd8569f1a077d2ff47a4bfd639

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