Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0ad4581b24c6f23…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 01:42:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: e2238bf0be2a0143a0ee917783411171 SHA-1: 360d7aeaa9544743fbc23e52351dd4e372ffdb65 SHA-256: a0ad4581b24c6f2336d86c68a1201ac73a6d3fbf5ce2303c4d01f2c5564aacd7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one pointing to known malicious redirector infrastructure at http://netcdn.co/app/431946152/faze-jev-roblox-hack-game-hack. This URL is presented as a lure for game hacks and generators, indicating a phishing or scam attempt. The ML classifier also flagged this PDF as malicious, supporting the assessment of a malicious redirector.

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/faze-jev-roblox-hack-game-hack In PDF document text
    • http://perpus.ar-rum.ac.id/repository/are-free-robux-games-real_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-hack-validation-code_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-hacks-codes-roblox-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/ars-78-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-money-cheat-rocitizens_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-today_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-jailbreak-hack-2021-download_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/roblox-hack-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/free-printable-roblox-coloring-pages_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/coin-master-official-page_GM406889139.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/download-roblox-go-through-wall-hack_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id/repository/how-to-get-free-gamepass-on-horse-world-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.ar-rum.ac.id//repository/roblox-arsenal-hack-script-pastebin_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_off00003053.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3053 22100 bytes
SHA-256: 829618208def1d7d4d2d36ac34b7e65b9f046153421d721fece4123157c4d5e9
font_01_sfnt_off00006184.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6184 19184 bytes
SHA-256: 68c064bec5e20405e0b51a44e98f0605c88ec4f4cd46832241fa3a658ccafc86

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