Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3a07c19b1fa9170…

MALICIOUS

PDF

34.1 KB Created: 2021-06-26 09:30:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7d7f2ce97d4526f47cb25cccbe8eb7d8 SHA-1: c9199afe4a6cac745c2a3a95434b9c1bf72f2d12 SHA-256: e3a07c19b1fa9170bad16e29a8cdece56cfeee9008e78907f5d25bcbda560192
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, masquerading as generators for free Robux and game hacks. These links are designed to lead users to potentially malicious websites. The ML classifier strongly indicated maliciousness, and the presence of numerous redirector links supports a phishing or scamming attack pattern.

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/in-roblox-how-do-you-get-free-robux-game-hack In PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/logo-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/minecraft-free-version_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-free-spins-daily-link-updated_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-online_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/buxblast-com-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-25-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_off00002eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB0 22040 bytes
SHA-256: 5cf0fdd9737baa3148439b76108eaf26a7eddf7913466ea0d072aa6f8f0846c6
font_01_sfnt_off00005f4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F4C 19388 bytes
SHA-256: 85211509af8af14139cb1eeb2e9b963c5bf203f62c71fae1c7839d4f256f7df7