Malicious PDF — malware analysis report

Static analysis result for SHA-256 066f39d25cad0237…

MALICIOUS

PDF

39.5 KB Created: 2021-05-22 15:12:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: af9ced04fa006617c2d88afaced9f784 SHA-1: 792f58cdc606f51e7fe9c6ac7d8351fc84dd2c1e SHA-256: 066f39d25cad0237527dbc4f2eb043dfc7db0a486fbc4a2ac0d034b76d335ae1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering 'game hacks' or 'generators', a common lure for phishing or malware distribution. The document body explicitly mentions 'Mobihack Net Roblox Hack' and includes a call to action to access a 'ROBLOX GENERATOR', reinforcing the social engineering aspect. While no scripts were directly extracted, the presence of malicious URLs and the lure suggest the document is designed to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8068

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/mobihack-net-roblox-hack-game-hack PDF link annotation
    • https://www.liputanbali.com/assets/CKImages/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/free-robux-script_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/roblox-re_GM431946152.pdfIn PDF document text
    • https://www.liputanbali.com/assets/CKImages/files/code-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_002_off0000339c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x339C 25044 bytes
SHA-256: 791695a76bb0d9975cd39da6df3d4501f993b66d1e3de93a9e8b004ce65b29b8
font_01_sfnt_off00006d9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D9D 2828 bytes
SHA-256: db1860fd79a3f2cbe32e2bada3ba4c68a2d581b7a24294387cd777233cc9cef6
font_02_sfnt_off00007754.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7754 18768 bytes
SHA-256: 4038ce5e3e0945c6cd976405ec29b4e5783f739c83bcd68413f286c6b350b233

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