Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d919deea4d707b5…

MALICIOUS

PDF

35.7 KB Created: 2021-06-22 06:12:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 871b0c7301fda3f14681496e639ed152 SHA-1: 2b58b10ef0a466cbd8fa3ea8f70735c11bed74c4 SHA-256: 8d919deea4d707b510097e86ac4e939f89484b79d3c57f00d7709a5c7819262d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and generators, directing users to malicious redirector infrastructure. The document contains multiple embedded URLs that lead to further malicious PDFs hosted on domains associated with redirectors. The ML classifier strongly flagged this PDF as malicious, supporting the observed redirection and lure tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/roblox-cheat-furk-game-hack In PDF document text
    • http://optiquedelavaunage.com/images/free-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/roblox-robux-hack-deutsch-2021_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/hack-a-game_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-hack-cheat-generator-coins-and-spins-unlimited_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/microsoft-roblox-rewards_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/arsenal-roblox-hacks-pasebin_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://optiquedelavaunage.com/images/how-to-get-free-robux-2021-no-human-verification_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_off0000324d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x324D 22988 bytes
SHA-256: ee789c1e417e0e6a250309a4445ee2baf4f06a842fee47a721891a82318feeb6
font_01_sfnt_off000065fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65FE 19232 bytes
SHA-256: ffb14ff0e029d754b720536fac1bd58933e9bc62941c67645665ca3531937080

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