Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd6b44f815a38870…

MALICIOUS

PDF

34.5 KB Created: 2021-06-29 17:45:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 03c6677baad8a8ee87da3f50886c8c17 SHA-1: 34cbb60d1446bcdbb9542dc85f109562ed05b02d SHA-256: cd6b44f815a38870df5d7be1eea8cb097aa6d1602f7ec36db959ebeedc3b22c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and hosts further malicious PDFs, masquerading as game hacks and generators. The primary lure URL is http://netcdn.co/app/431946152/free-vine-crown-for-roblox-game-hack, which redirects to other malicious content. The document body and embedded URLs suggest a social engineering tactic to trick users into downloading potentially unwanted or malicious applications.

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-vine-crown-for-roblox-game-hack In PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/roblox-console-hack_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/rtool-pw-roblox-robux-generator-roblox-cheat_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/hack-ultimate-driving-dinero-infinito-roblox_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-hack-progamers_GM406889139.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/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/hack-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/toolbox-for-minecraft-ios_GM479516143.pdfIn PDF document text
    • http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-auto-miner-hack_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_off00003027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3027 22332 bytes
SHA-256: a246cdcfbae6fb6098c74e528c1239ad093e55386b8b87ba250935fff4a39853
font_01_sfnt_off000061ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61CE 19068 bytes
SHA-256: 88b16eb4034466267accdcbe46a061cfddd314d78aa5c9af0fd9cd6e940b65bb