Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ba6bf65c6ec0f3e…

MALICIOUS

PDF

34.7 KB Created: 2021-06-25 20:19:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7a0a956e6c1337bfaf9dcf8d40b52192 SHA-1: c7a5b455dc5308db756736f76721a4151d533d6f SHA-256: 6ba6bf65c6ec0f3e5e3551fa07b1305ede819899c0bba2d3cfd732726c494dba
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to known malicious redirector infrastructure. The document body explicitly mentions 'Free Robux' and 'game hack', indicating a lure for potentially unwanted or malicious content. The embedded URLs likely lead to further phishing or malware download 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/free-robux-with-human-verifaction-game-hack In PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-mobile-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-pets-in-adopt-me-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/intriga-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-100-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-roblox-website_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-roblox-hack-no-survey-or-download_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-hack-account-real_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-coin-spin-daily-link-net_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-rc7-hack-scripts-lumber-tycoon_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-minecraft-alt-generator_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/easy-robux-hack_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_off00002fc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FC5 22028 bytes
SHA-256: 562b6d8316175062510fcc4a30978e96941099c68f6d523a5d5c5e9fc8cbc07c
font_01_sfnt_off000060c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C5 19700 bytes
SHA-256: 8b14ee22fcfa25f62777b70428c8c13e08516b960c8f7fddc92c23ad02cefb37