Malicious PDF — malware analysis report

Static analysis result for SHA-256 066775495e1b3506…

MALICIOUS

PDF

37.9 KB Created: 2021-07-06 06:51:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8a2f8bac46a033c19c837563a0752d3d SHA-1: 19a87401785436514183da6dae2c46b014fd0883 SHA-256: 066775495e1b35064e922caa6e199dba5590e68e984e2dfedbd6552ffcddbfde
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that promise free game-related items, such as 'free spins and coins' or 'game hacks'. The primary lure directs users to http://netcdn.tw/app/406889139/coin-master-free-spins-and-coins-link-today-game-hack, which is flagged as a game hack redirector. This suggests the document's purpose is to trick users into visiting malicious sites that may host malware or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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.tw/app/406889139/coin-master-free-spins-and-coins-link-today-game-hack PDF link annotation
    • http://itc-nekretnine.hr/files/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/tiktok-followers-free-no-verification_GM835599320.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/minecraft-for-laptop-free_GM479516143.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/when-does-roblox-librity-county-come-out-free_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-vip-roblox_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-group-payouts-roblox_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-robux-co_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coin-master-hack-no-verification_GM406889139.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
stream_002_off00003b01.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3B01 23564 bytes
SHA-256: e4b2f57cda7e499f9a7b65916aabbc0d2e0f83ea96c1260c988c82ba06020a3b
font_01_sfnt_off00007070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7070 18696 bytes
SHA-256: a6f9ee4f31e630697269259bd77ba9f20f050f36d84dfdb118abf4b75a264952

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