Malicious PDF — malware analysis report

Static analysis result for SHA-256 04becbcf475fb423…

MALICIOUS

PDF

40.4 KB Created: 2021-04-24 02:41:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 6c1da147cfa0c81b9c275763c0e2de2d SHA-1: 1a04bb19872eb03df9225412f50443fd696e0cd8 SHA-256: 04becbcf475fb4231110a8a809dc325d524f07f5af4c0eca6ae7c7f9117589e3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary one leading to a 'game hack' lure. This suggests the document is designed to trick users into visiting malicious sites, likely to download further malware or engage in phishing. The ML classifier strongly flagged this PDF as malicious, supporting the observed malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • 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.
  • 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.top/app/431946152/roblox-redeem-credit-hack-game-hack PDF link annotation
    • https://emindonesia.com/assets/CKImages/files/free-robux-car-codes.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/get-robux-free-button-script.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/roblox-threaten-to-hack.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/1k-robux-free.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/download-kranberry-roblox-hack.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/roblox-swear-hacks-script.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/cheat-engine-roblox-bypass-2021-june.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/roblox-hack-injector-dl.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/hacks-in-roblox-prison-life.pdfIn PDF document text
    • https://emindonesia.com/assets/CKImages/files/roblox-royale-high-cheats-for-diamonds-2021-on-xbox-one.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_off00004121.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4121 25468 bytes
SHA-256: 9a3cb7ade6e79d02761c623aba1bc2075bccf84a9fdc1dea028ad455c6b530cb
font_01_sfnt_off00007a71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A71 18840 bytes
SHA-256: 6cd66949b5a16ed193aac28464cd74a88b6bf36a2d7b8d9cfca86212156af07e

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