Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d6838a01c3b6008…

MALICIOUS

PDF

33.3 KB Created: 2021-07-09 06:32:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 9e8d1857bd19bfd5a6fc9b6bbbb74de7 SHA-1: 73aafc779d1cc5f0f5743c22f93cc15de4104ba1 SHA-256: 7d6838a01c3b6008ff162b14d5864bd53990d2272c6a916d1aca10979b9313e6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting "free generator / game hack" lures. The primary link, http://netcdn.tw/app/431946152/roblox-imagine-game-hack, is identified as a malicious redirector. The document's content and embedded URLs suggest a social engineering tactic to trick users into visiting potentially harmful sites, likely for malware distribution or credential harvesting.

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/431946152/roblox-imagine-game-hack In PDF document text
    • https://tckontrola.hr/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/package-roblox-free_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • https://tckontrola.hr/files/roblox-game-download-pc-free_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • https://tckontrola.hr/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/constructeur-roblox-free_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/how-to-make-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • https://tckontrola.hr/files/roblox-sunset-city-money-hack_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/free-coin-app_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/pubg-300-uc-free_GM1330123889.pdfIn PDF document text
    • https://tckontrola.hr/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/roblox-bux-free_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/hack-to-protect-village-on-coin-master_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_off00002d35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D35 21896 bytes
SHA-256: 939564a77e247cb9da27f83252421bd4758371b7a75f69cb75b18b1565357d12
font_01_sfnt_off00005d81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D81 18864 bytes
SHA-256: ea4d1e0d66ed511fdb3ea7ada25a2e13094c253047fc11979a144078ebcd1e51

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