Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eb23879b6d48ee6…

MALICIOUS

PDF

50.7 KB Created: 2021-05-16 12:42:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 593d8b43ce148bbfb48e93f3ae8f18e1 SHA-1: 564a46b493c3ed8757230edc44a8e51dde2f57ee SHA-256: 7eb23879b6d48ee614d5641c745ebd72721819744fb0b7f4fe6ff5fb9a6a9db6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them by promising free game currency or hacks. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. No scripts were extracted, but the document structure and embedded URLs strongly suggest a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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.xyz/app/431946152/free-robux-without-downloading-apps-game-hack In PDF document text
    • http://immo360grad.com/images/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-game_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/get-me-robux_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/minecraft-pe-016-0-apk-download-free_GM479516143.pdfIn PDF document text
    • http://immo360grad.com/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/instantrobux_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://immo360grad.com/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • http://immo360grad.com/images/free-robux-now_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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049b5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49B5 26248 bytes
SHA-256: 73deeeb4e6c0eef10e5f78268b6a3fe422f80678a341bf0d83fc07329bb3bb1c
font_01_sfnt_off000083c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C0 2844 bytes
SHA-256: baad2f3f6808f4af03fa9398e38c580c8d846f7f773a947d8cc1f39b2753d31a
font_02_sfnt_off00008d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D7C 7272 bytes
SHA-256: f462303657ce1de10d3e7d5ae1fe17c8584116bd5bc216971166de87266da924
font_03_sfnt_off00009eec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EEC 19876 bytes
SHA-256: 7dd9be13e4665f5a35086e4b23dd28e6d3ecc39135d95cb28b9ae9c86552181a

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