Malicious PDF — malware analysis report

Static analysis result for SHA-256 e74c17c96d85ea88…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 10:40:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0e8fc284adfd9c5c20788f4acdfb358d SHA-1: 6d45986e114931fa043a8c8dcc73c68c64c1bf55 SHA-256: e74c17c96d85ea88b0d209ecb80b710497af5f7f67a7e6f650d51a3f01022d72
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, specifically advertising 'game hacks' and 'free generators' to lure users. The primary malicious URL identified is http://netcdn.tw/app/406889139/how-to-hack-coin-master-ios-jailbreak-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or redirection attack designed to lead users to potentially harmful content or further malware downloads.

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/406889139/how-to-hack-coin-master-ios-jailbreak-game-hack In PDF document text
    • https://new-era.com.tw/image/data/files/mistplay-robux_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/www-roblox-com-free-games_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/hack-mining-simulator-roblox-2021_GM431946152.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-to-hack-roblox-for-unlimited-money_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/how-to-hack-robux-2021-pc_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-character-free_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/free-robux-codes-2021-june_GM431946152.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • http://new-era.com.tw/image/data/files/coin-master-spin-cheat_GM406889139.pdfIn PDF document text
    • https://new-era.com.tw/image/data/files/roblox-dragon-ball-rage-hack-december-2021_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_off00003122.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3122 22592 bytes
SHA-256: 623c570ea8fe542b01d5691d2bbf98e6e4bb947a7785d765e49f1638b0cf85ba
font_01_sfnt_off000063a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A1 18564 bytes
SHA-256: 93c5f09ed49a64bd3339ac691ee5f88aee00b9e7a85e0b0b0901e6c59d799170

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