Malicious PDF — malware analysis report

Static analysis result for SHA-256 7545223d0f429394…

MALICIOUS

PDF

35.7 KB Created: 2021-06-20 04:37:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 3e0154bde0cfed112aee63f6a871810c SHA-1: 54b39aefe0eea4bdfc72229445d9c40460a3020d SHA-256: 7545223d0f42939406de5f224ee079566f771e6a3d9a9282d756bf459dbe5c59
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary malicious URL identified is http://netcdn.co/app/431946152/how-to-play-heroes-online-roblox-for-free-game-hack. The document body and embedded links suggest a social engineering lure to trick users into visiting potentially harmful sites, likely for further exploitation or malware delivery.

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.co/app/431946152/how-to-play-heroes-online-roblox-for-free-game-hack In PDF document text
    • https://www.yantan.com.tw/upload/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/how-to-get-free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.yantan.com.tw/upload/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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
font_00_sfnt_off000032c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32C3 22788 bytes
SHA-256: 24e2922517af9f1a12a898e67b8c3e065dccd4fe177bc1e44abdefdee9437cdf
font_01_sfnt_off000065ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65EA 19268 bytes
SHA-256: b47938f00f27780cedb9face6051e299b307f6339c809411d0543d9d8c7b9f35

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