Malicious PDF — malware analysis report

Static analysis result for SHA-256 147392584eca96e2…

MALICIOUS

PDF

36.1 KB Created: 2021-05-24 11:58:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d1b0fc2d17f49d9948b051f4d5ee67bd SHA-1: 009251dc708a7c6c2fa32b722ef60e7049840f44 SHA-256: 147392584eca96e2924028a768e541252515a9b1b56a1a97f497ce14ec4f5fdb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic firing for a 'free generator / game hack' lure, directing users to a suspicious URL. The document body and embedded links also point to similar deceptive content, such as 'tiktok fans free' and 'free robux', all leading to potentially malicious domains. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to a malicious site for further exploitation.

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/tiktok-fans-free-game-hack PDF link annotation
    • https://cluster-consulting.com/images/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • https://cluster-consulting.com/images/earn-robux-now_GM431946152.pdfIn PDF document text
    • https://cluster-consulting.com/images/games-like-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://cluster-consulting.com/images/free-roblox-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002efd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EFD 28252 bytes
SHA-256: 695786399500e8c7a7a3bbc40a9a95f5982c84de659968a1018da1d37a4b277c
font_01_sfnt_off00006db0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB0 17684 bytes
SHA-256: 22325babc2251f8239949cad6d45cc43a88f66264b3c8ea65c603fce63084c3f

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