Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8cc2cf7967483d8…

MALICIOUS

PDF

46.0 KB Created: 2021-06-07 09:20:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c0839b5d7076c018660b0dba131b380c SHA-1: 8bd95a36bb3a2a2ec79dc936c4ebbbe4a7ee1d7a SHA-256: e8cc2cf7967483d86293927de9f8ba2bccbe7c21b74785ed5ec9d4d92b9b8d2a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9890

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/hack-roblox-robux-cheat-game-hack PDF link annotation
    • http://schoolsupportandbeyond.org/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/roblox-install-free_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/roblox-prison-life-hack_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/hack-coin-master-for-android_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/hack-a-game_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/minecraft-mods-download-free_GM479516143.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/hacken-in-roblox_GM431946152.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/is-minecraft-earth-free_GM479516143.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://schoolsupportandbeyond.org/images/robux-free-co_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_off00005529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5529 25524 bytes
SHA-256: 8fa3b1a9d6ea4eee2d83f93ae52e7cb62182880fabb2ae720f3a1e7dc8663f6b
font_01_sfnt_off00009074.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9074 18592 bytes
SHA-256: 141e7f7931469c189fcfe01dd295a1c8639f94ba94db7b30a3adcf4c32c0c0ac

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