Malicious PDF — malware analysis report

Static analysis result for SHA-256 63e0c04616f1c09e…

MALICIOUS

PDF

35.3 KB Created: 2021-07-06 04:26:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: bb6d7fc9ae433cc494b555994ca25086 SHA-1: 44f966a13a5ea54966c48c0d29a187e17acde56c SHA-256: 63e0c04616f1c09e88dc6601a3ddc5232465a5fb68e69c515d701d117de9cf0d
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized PDFs promising game hacks and cheats. The primary lure appears to be related to 'Coin Master' and 'Roblox' hacks. The document body and heuristics indicate a link farm designed to redirect users to potentially malicious or ad-filled pages, consistent with a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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-hack-without-root-game-hack PDF link annotation
    • http://libnh.stikesnh.ac.id/repository/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-hack-on-pc-2021_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-and-builders-club_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-earn-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-earn-robux-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/script-hack-prison-life-roblox_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/robux-online-free_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/codes-for-2021-november-for-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_off0000336f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x336F 22828 bytes
SHA-256: a38a52647c5d20ff6f9a4c0754a638561831639b46d44a911b97b9f22ef8cd8d
font_01_sfnt_off00006693.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6693 18508 bytes
SHA-256: e8f0f552a12aa69e994226cbfb6b4b1f2303cc9b7cfd31b3220157286440ebf7

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