Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90ac1ca7367361c…

MALICIOUS

PDF

41.2 KB Created: 2021-05-02 17:46:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: e251ffd079afd5b4eed2b2a1eb78e322 SHA-1: 5fec938c574a586359a18285c214e4a3c599d864 SHA-256: d90ac1ca7367361c48bbe4a556e2892face59569b92163506ffb3e5854b813c5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector, specifically targeting Roblox users. The embedded URLs and document body content reinforce this lure, suggesting the primary goal is to trick users into visiting malicious sites that likely host malware or phishing content. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/roblox-avatar-ideas-free-game-hack PDF link annotation
    • https://fridaytravelnepal.com/userfiles/files/como-hackear-robux-100-real.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-roblox-games-for-guest.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-cookies-hack.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-vesteria-free.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/cheat-engine-bypass-roblox-download.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/roblox-hacks-for-booga-booga.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/how-to-get-free-robux-fast-2021.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/earn-gg-free-robux.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-roblox-code-items-2021.pdfIn PDF document text
    • https://fridaytravelnepal.com/userfiles/files/free-item-codes-roblox.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_003_off00003f22.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F22 28216 bytes
SHA-256: a9e3768211a75c36ef0e572fbf6a5cc6e8338d62db4fe9ebdae9ed3b36fa0e77
font_01_sfnt_off00007e1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1A 18568 bytes
SHA-256: 44b7e510f382645a86a02c70f5bb89fe95c0bf46c25cfeb36ccf5b4bda15a100

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