Malicious PDF — malware analysis report

Static analysis result for SHA-256 4893c969b2eb1d1a…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 06:36:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 410785dbf8ab9f1acf2e55914f938639 SHA-1: 310974184580d5f2e22b20e128e628d61d790867 SHA-256: 4893c969b2eb1d1aa9c99836eb4c5ef376307ee2f65b9ea58f2a51ca9d596b55
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common social engineering tactic by luring users with the promise of game hacks and free in-game currency for popular titles like Coin Master and Roblox. The embedded URLs, such as http://netcdn.tw/app/406889139/free-download-coin-master-game-hack, likely lead to malicious downloads or further phishing pages. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a malicious intent to redirect users to potentially harmful content.

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/406889139/free-download-coin-master-game-hack PDF link annotation
    • https://www.labdagatismk1pundong.com/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-robux_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-games-download-free_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/i-need-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/download-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/hacked-by-john-doe-roblox-prank_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/www-free-robux_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/funny-roblox-avatar-free_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/free-roblox-exploits-that-are-safe-v3rmillion_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/spin-coin-master_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-free-spins-hack-ios_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_off00003200.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3200 22952 bytes
SHA-256: 707fd7bc5830daa3209aa1d429482ab45b726fcb6ceea5cfd65aee613e49838f
font_01_sfnt_off000065cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65CC 18576 bytes
SHA-256: ba0db7d20da48e941f50dfa15a3fc29fea34058df87ad3f7e9723dbec04454cd

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