Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeb4211831b8e50b…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 09:51:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c37d8a483f7e0765cf85956960cb7562 SHA-1: b2c1b400c7c0fa2792614d01d0d1ca586f615a1a SHA-256: aeb4211831b8e50b2f7ed08b90e705f51ab4bc51af50403fd8931b031d3d770a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'free generators'. The ML classifier also flagged this PDF as malicious. The embedded URL 'https://netcdn.online/app/479516143/optifine-minecraft-pe-game-hack' is a primary indicator of the malicious redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.online/app/479516143/optifine-minecraft-pe-game-hack In PDF document text
    • http://ghi.dk/billeder/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/is-free-robux-real_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/get-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://ghi.dk/billeder/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/universal-minecraft-converter-free_GM479516143.pdfIn PDF document text
    • http://ghi.dk/billeder/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/earn-robux-today_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://ghi.dk/billeder/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://ghi.dk/billeder/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/village-3-coin-master_GM406889139.pdfIn PDF document text
    • http://ghi.dk/billeder/robux-free-online_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/robux-miner_GM431946152.pdfIn PDF document text
    • http://ghi.dk/billeder/best-free-robux-sites_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_off000050e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50E4 24480 bytes
SHA-256: ebd3c431634f8fce4b60ef7b495dbc3033b1c365cd1ec587554b0cb1f8099ce9
font_01_sfnt_off00008822.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8822 17896 bytes
SHA-256: 329d7ab062be7e0d43787b7f833dde7fd9b3bb9f29dbab3fb3d55d3ae74c040a