Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6d7b4a8d5c39bfd…

MALICIOUS

PDF

34.6 KB Created: 2021-05-24 01:35:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 588ecbcfd8243bdca587a2d350c62c86 SHA-1: 4d1655c97066f5f77762e2d076a052b33ac231e2 SHA-256: c6d7b4a8d5c39bfdcd58d67c0c18ede36b94d15b5655fb6fd2c448de6fd64273
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to 'free TikTok coins' and 'game hacks', directing users to a suspicious URL. The ML classifier also flagged the PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to potentially malicious content or exploit kits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

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/835599320/how-to-get-free-tiktok-coins-game-hack PDF link annotation
    • https://cluster-consulting.com/images/earn-robux-com_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/pubg-uc-earning-app-in-pakistan_GM1330123889.pdfIn PDF document text
    • https://cluster-consulting.com/images/coin-master-online-hack-tool_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_002_off00003230.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3230 23664 bytes
SHA-256: 0dafd86fc36e7657195761d442382d405561525ea1436cd37256841b573968d6
font_01_sfnt_off000067b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67B0 17620 bytes
SHA-256: 5e08b925a0f8fe2d80e54c1999b1c3763f905cccf1acde0f5739739445e42325

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