Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fe02c3d77208068…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 15:16:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: b7656982e19f4bad0d62011b77f4218f SHA-1: ac0fedeaa5950b96356bec5e840d5e5d88b1c782 SHA-256: 4fe02c3d77208068db3e2bcaf9e02a415415818a5cee8acc3bfa379e56a36b0f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks and generators. The primary lure is a link to 'roblox-got-talent-piano-hack-game-hack', which is hosted on a known malicious redirector. The document's content and embedded URLs strongly suggest a phishing or scam attempt designed to trick users into visiting potentially harmful sites.

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.tw/app/431946152/roblox-got-talent-piano-hack-game-hack In PDF document text
    • https://cfla.gov.lv/userfiles/files/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/how-to-get-robux-hack-that-really-works_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/free-roblox-military-script_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/roblox-bloxburg-free-gamepass_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/roblox-phantom-forces-all-guns-free_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/free-roblox-accounts-with-robux-march-2021_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/hacking-roblox-accounts-cheat-engine_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/real-robux-codes_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/what-are-some-cheat-codes-for-destruction-simulator-roblox-codes_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/free-roblox-money_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_off00002f9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9F 22720 bytes
SHA-256: d67fe06f99f0cd0b65a826ba418c444269bec2b93550923e0f425c9e83388657
font_01_sfnt_off0000628a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x628A 19032 bytes
SHA-256: ceb6b6676ad0bc53fab19b8d7e907d465d751d2ce602378615980930f57ff6e8

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