Malicious PDF — malware analysis report

Static analysis result for SHA-256 c662cbc64c48dcaa…

MALICIOUS

PDF

21.8 KB Created: 2021-05-24 04:14:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 630d23955f0220c1d6ab0081faf7efd6 SHA-1: 5af140bcc36fac1800d872181bbe84b3180cae2e SHA-256: c662cbc64c48dcaaee931ccc4dbe8c49e3ea52ef16181a434041ca0bb9d478b3
74 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are designed as lures for game hacks and generators, specifically mentioning Minecraft. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this intent. While no scripts were directly extracted, the nature of the lures suggests a potential for JavaScript execution or redirection to malicious sites, aligning with common phishing or malware distribution tactics. The ML classifier also flagged the PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9226

Heuristics 3

  • 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.
  • 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/479516143/minecraft-games-free-download-game-hack PDF link annotation
    • http://reggieslockandkey.com/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000349d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x349D 12873 bytes
SHA-256: bda61ca2ebfad0df28826b031e2da9df44af659b3b21440b09aa6705db69e961

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