Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1be719bcce96077…

MALICIOUS

PDF

45.2 KB Created: 2021-05-12 23:48:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 73d112310b6856c090abecff8ff3a528 SHA-1: 0e8ccd5d40338af20ccdbe7f7c86f214595df995 SHA-256: e1be719bcce96077ba522480435a22824c358fc3fdc341133281134d2f35542f
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document employs a fake CAPTCHA and a game hack lure to deceive users into clicking malicious links. The primary malicious link, https://netcdn.xyz/app/406889139/coin-master-fun-hack-online-game-hack, is identified as a known malicious redirector. The document's structure and embedded links suggest an attempt to exploit user curiosity for downloading further malicious payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.xyz/app/406889139/coin-master-fun-hack-online-game-hack In PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/free-coins-for-flip-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/roblox-executor-free-download_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/free-coin-master-s_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/roblox-rape_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-blogspot_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/roblox-comroblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.man2banjar.com/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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
stream_003_off00004b13.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B13 30912 bytes
SHA-256: bd2bfacc46f574f88c04279d8dfa5da66c2330a47e1f68d317e9280bbdb2dc5d
font_01_sfnt_off00008f3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3D 18092 bytes
SHA-256: cb92e27069aef3c0bc648d9f638bf08ddfa79cec59b13d8f3523a3f3131ac35f

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