Malicious PDF — malware analysis report

Static analysis result for SHA-256 946965ba6b1847b1…

MALICIOUS

PDF

45.7 KB Created: 2021-05-11 08:13:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 54e4d24b0cb34d8e1d5669891446dfa9 SHA-1: e671f0d432b51526144ad9027f4c15a6358af5c8 SHA-256: 946965ba6b1847b17ee4729e3ad732bca0e27a46f161aad8a4fff8a4a2f9a935
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure related to game hacks and free in-game currency, directing users to a malicious URL. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves tricking users into visiting a potentially harmful website by promising free items or cheats for games like Roblox. No scripts were extracted, but the embedded links are the main indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

Heuristics 4

  • 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 https://netcdn.xyz/app/431946152/how-to-get-free-stuff-on-roblox-game-hack PDF link annotation
    • http://library.unissula.ac.id/fk//repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/robux-sites_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/robux-sign_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/freerobux-co_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ad0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD0 25824 bytes
SHA-256: 275f1104efd5e04cb72f4769fc0940cea48fb09d46e45119bb0da81949e8811e
font_01_sfnt_off00008609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8609 2852 bytes
SHA-256: e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f
font_02_sfnt_off00008fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FCA 18356 bytes
SHA-256: ffaf9c1d0f0fa5958176d70382b911ada4f2001fc33e5be3f9589d94896a3fd5

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