Malicious PDF — malware analysis report

Static analysis result for SHA-256 45aabee7e4479bcd…

MALICIOUS

PDF

33.4 KB Created: 2021-07-05 14:35:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 0a4a9db0e3240f73f9bde42a4ce3a411 SHA-1: 3c18a5f79f7497853dec6bb409936ae3122883cf SHA-256: 45aabee7e4479bcd2bfa95393a8dcb5bb693a6352fcae85c8028abf5ea01aa0a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links designed to lure users into clicking on them by promising free game currency or hacks. These links redirect to known malicious infrastructure, specifically a redirector hosting content related to 'Coin Master' and 'Roblox' cheats. The document's content and embedded URLs strongly suggest a phishing or scam campaign aimed at driving traffic to 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.tw/app/406889139/coin-master-free-spins-link-today-hack-game-hack In PDF document text
    • http://www.jsvillas.com.tw/assets/files/cool-free-hands-roblox_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-free-spins-twitter_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-robux-no-survey-no-download-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/roblox-ban_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/hacking-systems-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/my-roblox-account-is-being-hacked-what-do-i-do_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/roblox-cheat-all-gun-in-phantom-forces_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/how-to-get-free-robux-no-voucher-no-money_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/robux-scam_GM431946152.pdfIn PDF document text
    • http://www.jsvillas.com.tw/assets/files/how-to-free-robux_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_off00002e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3A 21892 bytes
SHA-256: bd1926fa2e96afc69b6a4e8fc332c43782aa7024c23ef36a29bccc4f2ae0276c
font_01_sfnt_off00005e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E71 18696 bytes
SHA-256: 52d9fe8110ff06ad00ec8fa1a07346420369e519ab2a60c67c24db73c6cb3001