Malicious PDF — malware analysis report

Static analysis result for SHA-256 83187c95964c1e1e…

MALICIOUS

PDF

34.3 KB Created: 2021-07-07 13:36:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 083a7717dfeddcffb02bb07657ff5555 SHA-1: 76d352e561d607cf2efc5d4f520cbf3d93b07ec8 SHA-256: 83187c95964c1e1e8d8457aa07d9bc91af968fae0f68c882e5fda796ca7e2b61
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a URL that promises a 'real coin master hack'. The document body and numerous extracted URLs reinforce this theme, suggesting the primary goal is to trick users into visiting potentially malicious sites for fake game cheats. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/real-coin-master-hack-2021-game-hack PDF link annotation
    • http://library.patria-artha.ac.id/repository/roblox-robux-hack-no-survey-no-offers_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-roblox-gsmes_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/unlimted-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/robux-free-von-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-free-items-2021-october_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-sword-fight-on-the-heights-original-how-to-hack_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-hack-admin-commands-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/dll-hack-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-promo-codes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/shirt-creator-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/i-think-my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-web-store_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/nomnomnom1-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-new-free-items-2021_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
stream_002_off000030a0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30A0 22420 bytes
SHA-256: d70a6873acdb5a46f8b227cf981e37f2bfc344a12814037c56962d402eec6924
font_01_sfnt_off000062af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AF 18480 bytes
SHA-256: f0581d3c4221426b4ac65b4c5e6d902d9e0c9709549af5e1d8ceac9b30b603c6

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