Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdaead81d6bcaef3…

MALICIOUS

PDF

35.5 KB Created: 2021-06-18 05:46:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 3a641753ab05289bf8397848f2325cd1 SHA-1: 0f2bba6fde7879fc13f1e0c54ee51d3dbbd2d761 SHA-256: fdaead81d6bcaef3d9f9b22b5ed9573d35da4bfc9cb9cd84558ff79dcea55dac
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors and potentially malicious content, disguised as game hacks and free currency generators. The heuristic firings indicate that the document is designed to lure users into clicking these links, which likely leads to further malicious downloads or exploits. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

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/pokemon-ultra-brick-bronze-roblox-free-shiny-umbreon-2021-game-hack In PDF document text
    • https://i-tech.ac.id/perpus/repository/youtube-how-to-get-free-robux-no-hack_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-club-roblox_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-get-unlimited-robux-free_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/noob-vs-pro-vs-hacker-vs-god-roblox-bloxburg_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-claim-now_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/hacker-names-list-roblox_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/fazbear-free-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/minecraft-font-free_GM479516143.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/game-cheat-for-roblox_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-legit-way-to-get-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/roblox-hack-no-human-verification-2021-pc_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://i-tech.ac.id/perpus/repository/heists-2-hack-roblox_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_off00002fee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FEE 22848 bytes
SHA-256: 9de8fd67a6c75ae6b8464d36021857159a0e5bf3fa7392966b9cc2944fa70937
font_01_sfnt_off00006246.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6246 20288 bytes
SHA-256: 5e23dc0636f24e1dfd454fe6652242f84c6f48b26a9489bddc86c6f8d54f4627

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