Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a2f5c658f86eece…

MALICIOUS

PDF

42.3 KB Created: 2021-05-10 23:16:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: dbeab9d024cfe6b56e9bd1cef3b4307c SHA-1: 1f5d5bd1f5054ab753725ce93d815babac880ede SHA-256: 8a2f5c658f86eece4f69f028027fd7f16346bff8f988f6885d5f019fbeab3fef
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to malicious redirectors, masquerading as game hacks and free currency generators. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-master-hack-to-get-free-spins-game-hack. The document body and embedded URLs suggest a social engineering lure to trick users into clicking these links, likely leading to further malicious content or downloads. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-hack-to-get-free-spins-game-hack In PDF document text
    • http://www.e-lysis.com/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/roblox-source_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-hacks-for-free-spins_GM406889139.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/arsenal-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://www.e-lysis.com/images/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-to-win-free-robux_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_003_off0000493c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x493C 25648 bytes
SHA-256: ffa5803a3d0c575f3b7a79bbde4bced9c8348e629ac1bfe5bd2d4cfec52caeba
font_01_sfnt_off000083ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83CA 18056 bytes
SHA-256: 6ebf753f6e2aa75b7f89159318a8360a057196b850713683f584e5709dbcaa9a

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