Malicious PDF — malware analysis report

Static analysis result for SHA-256 942e6c53d43581f9…

MALICIOUS

PDF

41.4 KB Created: 2021-05-12 16:37:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b13060d9caed3151d67036302d4175c9 SHA-1: b69f250f28e1fb52c46081faa6b5446264618b3b SHA-256: 942e6c53d43581f96d767470e711f2ef1445d7c9466aa78fc8dca76d4e1af6fc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing for a 'GAME_HACK_REDIRECT_LURE', directing users to a URL associated with game hacks. The document body and embedded links further reinforce this lure by mentioning 'Robux Hack Tools' and providing numerous links to similar exploit-themed PDFs. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern is social engineering to trick users into visiting a potentially malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/robux-hack-tools-game-hack PDF link annotation
    • http://lakeshistory.com/images/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://lakeshistory.com/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://lakeshistory.com/images/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://lakeshistory.com/images/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lakeshistory.com/images/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lakeshistory.com/images/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lakeshistory.com/images/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://lakeshistory.com/images/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • http://lakeshistory.com/images/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lakeshistory.com/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://lakeshistory.com/images/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • http://lakeshistory.com/images/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://lakeshistory.com/images/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://lakeshistory.com/images/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://lakeshistory.com/images/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • http://lakeshistory.com/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lakeshistory.com/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lakeshistory.com/images/rewards-robux_GM431946152.pdfIn PDF document text
    • http://lakeshistory.com/images/hack-coin-master-online_GM406889139.pdfIn PDF document text
    • http://lakeshistory.com/images/free-pet-food-coin-master_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
stream_003_off00004636.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4636 24864 bytes
SHA-256: f4e08d7e94c05dc7242536a5171b1c2d195d2ca3e5d31a5eee21276cea2b6c21
font_01_sfnt_off00007efa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFA 18320 bytes
SHA-256: cf6d0fcc2a7c18e0ae1e84145e037068603b130caaef77e993c358e364abbe1e

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