Malicious PDF — malware analysis report

Static analysis result for SHA-256 15e95a969f9e8fd4…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 22:24:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fab7b53f43d05af3d3a7feaa39b1d5a3 SHA-1: 5809d29935dfdce430416a27175a5252bcb0e208 SHA-256: 15e95a969f9e8fd46fa5bc6e4767fec56c5c26a727260b18f900c162b7299702
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, promising free coins for Coin Master and hacks for games like Roblox. It contains multiple links, including one to 'netcdn.tw' and several pointing to an IP address, which likely lead to malicious sites or downloads. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is a phishing or scam document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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-coins-game-hack PDF link annotation
    • http://118.98.227.172/opac/repository/simplysarc_GM479516143.pdfPDF link annotation
    • http://118.98.227.172/opac/repository/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/roblox-project-pokemon-cheats_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-hack-lab-experiment-roblox_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-stuff-roblox-lobby_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/rbx-place-free-robux_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-free-spins-link-2021-twitter_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-hairstyles-on-roblox_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-robux-no-human-verification-ios-2021_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-robux-vouchers_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-look-good-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/cheat-codes-for-roblox-pet-simulator_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/mad-city-roblox-hack-executor_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-get-free-robux-the-easy-way_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/free-anime-t-shirt-roblox-adidas_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/assassin-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://118.98.227.172/opac/repository/how-to-hack-a-roblox-account-using-cookies_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
stream_002_off000034b6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34B6 22976 bytes
SHA-256: ddc3489726f4b2dca0c28e50d6342def0f6ce99d230876242971cbc44c5ffb26
font_01_sfnt_off00006864.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6864 17996 bytes
SHA-256: 2ec206c530faa3d40eac36f14655b3e9b935e9ff12c648634e177d5bc9421463

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