Malicious PDF — malware analysis report

Static analysis result for SHA-256 375c08fb69787087…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 01:37:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 5908047d1cb519d6e941496927722c23 SHA-1: ba4a877121f5a15589dfc21f796b93b426a882cc SHA-256: 375c08fb697870872fc5d1d626eca8e45c280d90d02917393309a1b976acd43b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and embedded URLs suggest a phishing attempt to trick users into visiting malicious sites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the PDF structure and embedded URLs strongly indicate a malicious intent.

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/websites-to-get-free-robux-game-hack In PDF document text
    • https://www.sonestad.se/library/repository/hack-skywars-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/como-conseguir-ropa-gratis-en-roblox-2021-hack_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/furk-se-free-key-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/master-coin-hack_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-a-lua-injector-for-hacking-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/hackear-xuents-de-robux-de-un-amigo_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/all-minecraft-handbooks_GM479516143.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_off00002ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFB 22148 bytes
SHA-256: 4d0c00ceca95b44fae6b86fe0d9fa6124cce008e45c5c5a8605a1620396a0a14
font_01_sfnt_off000060c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60C7 19136 bytes
SHA-256: 1ff3ead325db6faa7b931a8562dea2485ede573d321a491f501e33267cef6888

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