Malicious PDF — malware analysis report

Static analysis result for SHA-256 5484cc2831888a62…

MALICIOUS

PDF

35.7 KB Created: 2021-07-04 09:37:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: c2ad07e2c2954ece3fdcf63d5558aaf0 SHA-1: d24c242c75e4a46f31b9a54c29b93378b7204546 SHA-256: 5484cc2831888a620c50f470fa967b8bce54ef38addf05f26a1d043767ca3c3f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free generators". The primary malicious link identified is http://netcdn.tw/app/406889139/coin-master-free-link-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a lure designed to redirect users to potentially harmful content, likely as part of a phishing or scam campaign.

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/406889139/coin-master-free-link-game-hack In PDF document text
    • https://pustaka.widyakartika.ac.id/repository/adopt-me-roblox-hack-money-free-youtube_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-gift-card-codes-2021-november_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-eliminating-wall-hacks_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-an-old-roblox-account_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/roblox-hackfr-sans-verification_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-generator-hack_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-into-a-hacked-roblox-account_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hack-para-roblox-reign-teleports-666-y-mas-tutorial_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/hax-teamcf-free-robux_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-get-free-robux-hack-on-android_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-mad-city-roblox-and-teleport_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/how-to-hack-retail-tycoon-roblox-2021_GM431946152.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • https://pustaka.widyakartika.ac.id/repository/easy-way-to-get-free-robux-2021_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_off00003503.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3503 23176 bytes
SHA-256: bfafbff0b203b4fb6f289053e006db163468c2e9188c39b26d4227cebf380c87
font_01_sfnt_off00006936.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6936 18168 bytes
SHA-256: 7e3864b359ae4e20f98f554aea3d5366a72fce57ca0fb6405be6acd76bdcbaac

Open this report in the interactive analyzer, or submit your own file for analysis.