Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bdf95e341d6b52c…

MALICIOUS

PDF

35.4 KB Created: 2021-06-20 01:23:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7fd18fe3b47b3b6bed35ba986cf35958 SHA-1: aa32b2ad2d6604ac88f917a454f24578aa333bd4 SHA-256: 9bdf95e341d6b52ce03dd7e5a8aeea9dcc8c64244610d37e562e01c0888807ea
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of game hacks and free currency to entice users. It contains a large number of external links, many pointing to other PDFs hosted on similar domains, suggesting a link farm or SEO manipulation tactic. The primary URL http://netcdn.co/app/431946152/how-to-get-free-money-on-roblox-high-school-2-game-hack is a strong indicator of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/how-to-get-free-money-on-roblox-high-school-2-game-hack PDF link annotation
    • http://library.patria-artha.ac.id/repository/how-to-hack-roblox-with-inspect-element-no-blogspot_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/tiktok-free-view-kreatif-lucu_GM835599320.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-game-free-spin-download_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/https-www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-get-bc-in-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-hack-download-url-is-gd-robloxsrvr_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/any-free-roblox-exploits-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/descargar-coin-master-hack_GM406889139.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_off0000309b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309B 22860 bytes
SHA-256: cd4c91323b0b06ed65e2e94d02c92a1b0a233a726e944637ca3f323d0a2478fe
font_01_sfnt_off00006383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6383 19704 bytes
SHA-256: 119dcd4b8763429cb676ddf25734b603f69d793f6ecdfc5f388611c6e99d8e97

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