Malicious PDF — malware analysis report

Static analysis result for SHA-256 3163317c444849c9…

MALICIOUS

PDF

21.9 KB Created: 2021-07-04 22:06:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 490ab0c8515e44790f8166c80ebcd864 SHA-1: 5c5ae49fffaa6dae558b77aef10de4dc5c43499c SHA-256: 3163317c444849c99847086dcab502e985d3d87f8bbad919f753fc9bc2c192e8
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a known malicious redirector infrastructure. The primary lure appears to be related to 'free generators' or 'game hacks' for popular games like TikTok, Coin Master, and Roblox. The document body and embedded URLs suggest a phishing or scam attempt to redirect users to potentially malicious sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 3

  • 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.
  • 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/835599320/tiktok-free-credit-game-hack In PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/hack-roblox-paintball-frenzy_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-roblox-account-generator_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/getrobux-ninja_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/free-robux-by-wtaching-ads_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac//repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/roblox-www-com_GM431946152.pdfIn PDF document text
    • http://elib.upiyptk.ac.id/opac/repository/wurst-client-112-2_GM479516143.pdfIn PDF document text