Malicious PDF — malware analysis report

Static analysis result for SHA-256 018b27f878dccfed…

MALICIOUS

PDF

43.3 KB Created: 2021-04-29 01:18:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 17c86ec63d4fb31f7a0192eb1fbaaf84 SHA-1: 2d0a27efd9229faf34c3216f51564c844762c85e SHA-256: 018b27f878dccfed053ab3e9f208ef0571bf50607601d30f237a4e19a21861dc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free script runner for Roblox game hack', directing users to a suspicious URL. This heuristic, combined with multiple embedded URLs pointing to similar game-related lures, strongly suggests a phishing or scam attempt. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9868

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/free-script-runner-for-roblox-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/roblox-survivalist-hack.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-for-roblox-pc.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-a-account-password-on-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-dominus-free-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-skin-on-strucid-in-roblox-how-to-get-i.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-meep-city-how-to-get-free-coins.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-apk-modapkdown.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-pastel-hair-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-get-free-robux-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/4life-fun-free-robux.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_003_off000040de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40DE 26256 bytes
SHA-256: 7ec86e587a4b42294a21351da512b823319a8fb93a2fcdb2b8186acd4578e4fc
font_01_sfnt_off00007d19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D19 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off000086c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C9 18488 bytes
SHA-256: bd5861fe5290ebbd45510ce57b7cca0800a923c6467bda630e1087453b34d97c

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