Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e3ae9650e9239f7…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 00:08:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fe4f44ebaecafc5eb2c64f30cef2acf2 SHA-1: 79f1d9d0a330e7ce095c05e3c38408cfa36e0c05 SHA-256: 6e3ae9650e9239f71c06ddd2b19c646b00bcfad644f23c800fb978aa973c9bca
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links and a lure related to 'free Robux' and game hacks, indicating a social engineering tactic to entice users. The heuristic firings confirm the presence of external URIs and a game hack redirect lure. The document body, though partially corrupted, reinforces the theme of obtaining free Robux, suggesting the primary goal is to direct users to malicious websites for potential malware downloads or phishing.

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/431946152/free-robux-2021-game-hack PDF link annotation
    • http://petrorang.com/admin-panel/products/images/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/minecraft-apk-free-download-016-0_GM479516143.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/hacker-vs-admin-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/minecraft-windows-10-code-free_GM479516143.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/robux-without-verification_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-robux-kid-friendly-no-human-verification_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
font_00_sfnt_off00003063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3063 22244 bytes
SHA-256: 6763fe49775f7ec79fa1d3b6dec26e1f19a2cc4f4b4f0ea87e9938e637925ac4
font_01_sfnt_off000061c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C5 19116 bytes
SHA-256: bd102244ffb40c6add567cd3640126a26b927334c4b0bdc73f6a542841550b4a

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