Malicious PDF — malware analysis report

Static analysis result for SHA-256 06acd5d1fc262fd3…

MALICIOUS

PDF

42.1 KB Created: 2021-05-18 06:07:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 318af447c35fa01573e070fb1c117b03 SHA-1: 0128bf3d649187394da84485f68a721c328ef3c4 SHA-256: 06acd5d1fc262fd3b5c8a836d63889a082f7e732b4970ab4df617b1fbce1a3cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically targeting game-related lures like 'Coin Master' and 'Robux'. The heuristic firings confirm these links lead to malicious infrastructure and a redirector. While no scripts were directly extracted, the PDF structure itself facilitates the redirection, likely serving as a lure for phishing or scamming users.

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-free-redeem-code-game-hack In PDF document text
    • http://www.e-lysis.com/images/where-to-get-robux_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-source_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-online-hack-link_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://www.e-lysis.com/images/who-to-get-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_off000049ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49FF 24944 bytes
SHA-256: aed5ccbf49652cd7e5bc09276eecc42e29411cea8049fa572bbeff988538aee8
font_01_sfnt_off000082af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82AF 18144 bytes
SHA-256: 5bbd7c38c96c77c4f9f35a136dd3471001d40e5cdd485746050297559c8b8e4d

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