Malicious PDF — malware analysis report

Static analysis result for SHA-256 7094070e10e5321d…

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 09:55:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 11d069848d416d419a1edf7fbb3da7e2 SHA-1: 60afeec4b2266f2aa044ce52d474b0d7d28b3bfe SHA-256: 7094070e10e5321d64bb84139863bae9885d59742704ef44c45e2f5549da39b9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free generators' and 'game hacks'. The document body, though partially corrupted, contains text related to these lures and an embedded URL. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/431946152/free-robux-games-game-hack In PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-hack-apk-android-1_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/lazyblocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-get-more-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-tiktok-followers-without-human-verification_GM835599320.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/free-coins-for-coin-master-blogger_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-spin-hack-trick_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://dolphintour.vn/images/uploadsfiles/how-to-get-free-robux-without-email_GM431946152.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_004_off000050a3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50A3 26204 bytes
SHA-256: 43b1692ef4dd10bbee4c2e5476a1e80bc87e23fedb1a41e988d32dd48429cfda
font_01_sfnt_off00008de8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE8 18500 bytes
SHA-256: 50954281d46d1092d2c36c5fba9e04257001c8c7e5b0c8732206987489559ecb

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