Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f27fe907af2806c…

MALICIOUS

PDF

33.7 KB Created: 2021-06-29 02:12:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2864dcde40960f20ec125106af51b87c SHA-1: abe23f244d4a38fdf57437c66259f59f889fcb6e SHA-256: 7f27fe907af2806cdc2fd9aac73552602dd4df592e1793d1a3c132d6a8b3bac6
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, with a primary lure pointing to a 'robux-hack-no-download-2021-game-hack' page. This heuristic, combined with the ML classifier's high confidence, indicates a phishing or scam attempt designed to redirect users to a potentially malicious website. The document's content and structure suggest it's part of a social engineering campaign to trick users into clicking malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.co/app/431946152/robux-hack-no-download-2021-game-hack PDF link annotation
    • http://pustaka.faterna.unand.ac.id/repository/free-roblox-assassin-knives_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/rbuxcheats-club-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-cheat-codes-to-fly_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-hack-money-systems-on-roblox-tycoons_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/lvl7-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/hackbox-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-become-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-hack-ghost-simulator-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/free-spins-coin-master-october-13-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-robux-on-laptop-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-get-free-robux-from-the-robux-page_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/roblox-veil-hack-update_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/easy-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.faterna.unand.ac.id/repository/how-to-hack-in-roblox-booga-booga_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D7B 21560 bytes
SHA-256: 3bed92797ce6e80345feb379bf384c26c60e9c34fdd4b04b522f95ebd650a2d3
font_01_sfnt_off00005c73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C73 19704 bytes
SHA-256: d074e108319106970c972d05f79a31653116c961c9f2a646c3acceb8516d1650

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