Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb36f55a858af7d7…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 07:30:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: fc3a68df18c4518c37a835f3c80f4a10 SHA-1: 7d111c160a453a121596b5dfbbdd082c1e14e788 SHA-256: eb36f55a858af7d7c7941e6ad8c091e19fbb593d7d2208f58770739d41a19062
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as free game hacks and downloads. The primary lure URL is http://netcdn.tw/app/479516143/minecraft-free-download-no-virus-game-hack, which is part of a chain designed to lead users to further malicious content. The document body and heuristics indicate a social engineering tactic to trick users into visiting these 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/479516143/minecraft-free-download-no-virus-game-hack In PDF document text
    • http://www.readandenjoy.ae/userfiles/files/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/conquerors-3-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/roblox-a_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/how-to-get-free-robux-on-roblox-without-builders-club_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/coin-master-gift-link_GM406889139.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/village-coin_GM406889139.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/como-hackear-vehicle-simulator-roblox-para-tener-12000000_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/how-do-you-get-free-robux-on-a-tablet_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/robloxcom-free-robux-obby_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.readandenjoy.ae/userfiles/files/exploit-hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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_off00003223.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3223 22572 bytes
SHA-256: e592b8b66a8eb69168f3bd2b178206de790001af907bca6f348caa70a6f21b18
font_01_sfnt_off00006413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6413 18852 bytes
SHA-256: cb8dfb970cdf0d1864248e93dc40b53e7b02b918a2ad4072c45ffd8478cc91fb

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