Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a8904bf2e2bdf61…

MALICIOUS

PDF

33.6 KB Created: 2021-07-03 12:54:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 44b2bf7e2fc8d4dfa4553ed9314fe2f2 SHA-1: 0a6a017f838b7316aa91982c946786356f8b0913 SHA-256: 2a8904bf2e2bdf61d0fb8b5d8feb9de7bc5d9d3d85bdd608036d5297fdfda892
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generators' and 'game hacks' for popular games. The primary lure URL is http://netcdn.tw/app/479516143/free-minecraft-survival-server-game-hack. The document body and embedded URLs reinforce this lure, aiming to trick users into clicking through to potentially malicious sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/479516143/free-minecraft-survival-server-game-hack In PDF document text
    • http://www.hlad.hr/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-admin-roblox-games_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/lua-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/www-roblox-com-sign-up-for-free_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/how-to-hack-into-roblox-accounts-using-a-cookie-editor_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/pokemon-go-free-gift-codes_GM1094591345.pdfIn PDF document text
    • http://www.hlad.hr/files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/roblox-change-your-username-for-free_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/minecraft-112-2-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/how-to-get-free-robux-secret-discovered-on-roblox_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_off00003076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3076 22164 bytes
SHA-256: 7c8e51582cd12fa7cd35c057cb845a3b10056070c7fd914c94d7f62c6a59a7e2
font_01_sfnt_off0000611d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x611D 18184 bytes
SHA-256: aa4b263e48621cfecba3d9fc0f6d5ba7bc8503c5f36487cc72bd4c38d51a6610

Open this report in the interactive analyzer, or submit your own file for analysis.