Malicious PDF — malware analysis report

Static analysis result for SHA-256 27fd74f872e12050…

MALICIOUS

PDF

34.2 KB Created: 2021-07-09 11:13:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f7d7c9d9f147c4c3736c2b036de598b5 SHA-1: b758f26fbf10d07e9af5ca10e146260f767878ff SHA-256: 27fd74f872e120508e83a540eb581ff6cac43c31bb17cd808bf2d7cdf9cdd852
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic firing for linking to a game hack redirector, and the document body explicitly mentions 'how-to-play-minecraft-with-friends-for-free-game-hack'. The embedded URL points to a suspicious domain, likely serving as a lure for malicious content or a scam. No scripts were extracted, but the overall pattern suggests a phishing or malware distribution attempt.

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.tw/app/479516143/how-to-play-minecraft-with-friends-for-free-game-hack PDF link annotation
    • https://www.cow-style.com.tw/upload/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/game-codes-eu-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/can-u-make-a-shirt-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/roblox-weight-lifting-simulator-3-hack-script_GM431946152.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/hackear-coin-master-sin-root_GM406889139.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/free-robux-hack-generator-2021-that-i-can-download_GM431946152.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/cbr-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/robux-giver-for-free_GM431946152.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/free-codes-for-assassin-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/how-to-get-minecraft-for-free-2021_GM479516143.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cow-style.com.tw/upload/files/coin-master-daily-free-spins-link-march-2021_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
font_00_sfnt_off000030a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A6 21920 bytes
SHA-256: 7e7bbf29dcc1ed61a01e66c6721081842f70bb301ac2c8f6aa3ea84621d16b1a
font_01_sfnt_off0000609a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609A 19108 bytes
SHA-256: 5162437770a110f8fb1f842d380ac1671e371cd1c83a627391e03ed6502866fc

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