Malicious PDF — malware analysis report

Static analysis result for SHA-256 0893f197a0080435…

MALICIOUS

PDF

42.4 KB Created: 2021-05-11 21:11:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: c68f677a7eb6b83d687d98e2fa04094f SHA-1: f5014960a21d09b5218f53aa8000ed90f86c5a21 SHA-256: 0893f197a008043526e2cb659645161af6ddeb3e29d733a1161ac631b4ae858f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to known malicious redirector infrastructure, specifically promoting "game hacks" and "generators". The primary lure URL is https://netcdn.xyz/app/406889139/daily-free-spin-link-for-coin-master-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or social engineering attack aimed at redirecting users to potentially harmful sites, likely for further malware delivery or credential harvesting.

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/daily-free-spin-link-for-coin-master-game-hack In PDF document text
    • http://dmoraitis.gr/images/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://dmoraitis.gr/images/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://dmoraitis.gr/images/get-free-robux_GM431946152.pdfIn PDF document text
    • http://dmoraitis.gr/images/robux-sign_GM431946152.pdfIn PDF document text
    • http://dmoraitis.gr/images/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • http://dmoraitis.gr/images/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://dmoraitis.gr/images/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://dmoraitis.gr/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://dmoraitis.gr/images/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://dmoraitis.gr/images/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://dmoraitis.gr/images/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • http://dmoraitis.gr/images/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://dmoraitis.gr/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://dmoraitis.gr/images/coin-master-free-spin-link-list_GM406889139.pdfIn PDF document text
    • http://dmoraitis.gr/images/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://dmoraitis.gr/images/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://dmoraitis.gr/images/facebook-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://dmoraitis.gr/images/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://dmoraitis.gr/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://dmoraitis.gr/images/roblox-zone-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
font_00_sfnt_off00004ab1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4AB1 24680 bytes
SHA-256: 615ea06b6cfe53e942ce91c2fa7c518732bc317eda66edc78b36968175167e99
font_01_sfnt_off000082c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C0 18476 bytes
SHA-256: a1e2d053ddd827b51a873b4daf81e699df0b3bac0bfbdaf6be5e73db52a20702

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