Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c5a7f1902963c3a…

MALICIOUS

PDF

34.6 KB Created: 2021-07-08 14:27:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 21863518d8e34c7862f625a6bb632c04 SHA-1: 35408eaebd0135404f89df55503bb0db035117ad SHA-256: 3c5a7f1902963c3a0a29834b62938651303b0837d9fc82f7f6e8121c5412357d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "robux hack generator" that redirects to a suspicious URL. This is a common social engineering tactic to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lead the user to a potentially harmful download or phishing page.

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/431946152/robux-hack-generator-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/pastebin-hack-for-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/dayz-roblox-cheats-codes_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-just-sign-in_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-the-complete-handbook-collection_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/hack-roblox-net-one-handynummer_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/7aykw-duncan-free-robux-no-survey-human-verification_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/bad-business-hack-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-hack-v6-5-mythical-chaos_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-galaxy-wings-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/daily-free-spins-coin-master-heaven_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/exe-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-codes-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
font_00_sfnt_off00002ff1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF1 22624 bytes
SHA-256: f21f6c5603d4e50c2a1b94d703b595206478911886f87edfd832906895a332e4
font_01_sfnt_off000062a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62A7 18824 bytes
SHA-256: 6a2f4fb47bcac7a1427eb84fb186ae35d3638566a93e34d85c8a35338f058712

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