Malicious PDF — malware analysis report

Static analysis result for SHA-256 d72b7007d6f8890c…

MALICIOUS

PDF

44.5 KB Created: 2021-04-22 16:33:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 49dc20b7e4e110f58ff2a10f26d97229 SHA-1: e76c0e545f4c41044d621fc23c1d235d33da7778 SHA-256: d72b7007d6f8890c4dc3d4127ff06708cc6c0ee866d29f3faf5c88779318b1b7
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple lures related to game hacking and free in-game currency, specifically targeting Roblox. It includes a prominent link to a "game hack" site, which is a common social engineering tactic to trick users into downloading malware or providing credentials. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9863

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://netsecure.pro/app/431946152/admin-hack-any-game-roblox-script-pastebin-game-hack PDF link annotation
    • http://domaizdereva24.ru/images/roblox-pc-hack-2021.pdfIn PDF document text
    • http://domaizdereva24.ru/images/how-to-get-free-robux-not-a-scam.pdfIn PDF document text
    • http://domaizdereva24.ru/images/granny-all-badges-hack-roblox.pdfIn PDF document text
    • http://domaizdereva24.ru/images/free-robux-no-verification-no-download-2021.pdfIn PDF document text
    • http://domaizdereva24.ru/images/robux-hack-download-google-chrome.pdfIn PDF document text
    • http://domaizdereva24.ru/images/free-games-at-roblox-2.pdfIn PDF document text
    • http://domaizdereva24.ru/images/free-robux-may-2021-no-suscribe.pdfIn PDF document text
    • http://domaizdereva24.ru/images/free-brown-pant-roblox.pdfIn PDF document text
    • http://domaizdereva24.ru/images/hack-for-free-fake-ptomocodes-that-give-robux.pdfIn PDF document text
    • http://domaizdereva24.ru/images/free-robux-no-human-verification-2021-real.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_off0000434a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x434A 26384 bytes
SHA-256: f8b87c5ca22f97b5681ea6e5b4788064d9faa6fd0d10f46271aca9736d11502e
font_01_sfnt_off00007f02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F02 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000088b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B3 19348 bytes
SHA-256: fcde53529e88c42eb986a522830aeac45ce1bf9272d935584799d62bb193cbfc