Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb2440ece435e984…

MALICIOUS

PDF

35.5 KB Created: 2021-06-21 23:25:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 44963970e21c264a5073fe5a33f72e70 SHA-1: 3dd723cdd81ba551e43deb654564a63e99530771 SHA-256: cb2440ece435e98466d0293831278c42812d81a3740175cc543288b873c91620
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and generators to entice users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting potentially harmful 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/black-t-shirt-free-roblox-game-hack In PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/cheat-argent-roblox-vhicule-simulator_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/http-gamesjarcom-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-don-t-need-to-download_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/wurst-18-9_GM479516143.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/roblox-btools-hack-script-2021_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-cheats-switch_GM479516143.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-daily-free-spins-blog_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-hack-people-for-revenge-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/download-minecraft-bedrock_GM479516143.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_off000031fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31FD 22876 bytes
SHA-256: ec8ffdc3060efc2e39d9ce910ca283d3342cc5c3408ccf75f3fb6283a70060cb
font_01_sfnt_off00006558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6558 19212 bytes
SHA-256: 678b6cc71973f670e412a988754b38b8d1e71e2c8101290f5871247f9a3e219d