Malicious PDF — malware analysis report

Static analysis result for SHA-256 24d8018e373d8696…

MALICIOUS

PDF

45.4 KB Created: 2021-05-17 11:16:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: b4d736607de98157ba4910243a390233 SHA-1: 91853f66becc8ba12e23aaae8d6e6e1d71f92cd3 SHA-256: 24d8018e373d869684c3903eb6bb453663f31d23c668a78330cd82e2f228a62c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free generators". The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-mod-apk-free-download-game-hack, which is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely to download further malware or engage in scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/406889139/coin-master-mod-apk-free-download-game-hack In PDF document text
    • http://www.e-lysis.com/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-roblox_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://www.e-lysis.com/images/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-hacks-for-android_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004811.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4811 25800 bytes
SHA-256: 7cd4f67ecb28d136b35989c5bfce612ed0db31936731634fba927d3be2a1bd26
font_01_sfnt_off000082c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C6 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00008df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF0 18636 bytes
SHA-256: 430b8c6468b29bcb8a063019981b9f21e2cad4554a01abe6c0aff1c8414741f1

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