Malicious PDF — malware analysis report

Static analysis result for SHA-256 8731b91406e46725…

MALICIOUS

PDF

37.9 KB Created: 2021-05-22 08:10:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7be4790c4444f3db5aa9c7c1aced1358 SHA-1: c788c5e6c150127755547b6a7b3d43d188420ea3 SHA-256: 8731b91406e467250d74b34177edddaf40b7c1138a1b6171406ce3d6134bd7d5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a heuristic firing indicating it's a 'GAME_HACK_REDIRECT_LURE'. The document body explicitly mentions 'Free Robux' and directs users to a URL that promises game hacks. This suggests the PDF is designed to trick users into visiting malicious websites, likely for phishing or to download further malware. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/how-to-get-free-robux-on-roblox-game-hack PDF link annotation
    • http://www.metanoiaconsultantsglobal.com/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/pokemon-go-free-android-download_GM1094591345.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/how-to-get-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.metanoiaconsultantsglobal.com/images/hack-a-game_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_off00003495.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3495 27008 bytes
SHA-256: 6fcaefa9c4e12019494a45e389639cddff14b296f6115361ae248af343a0fc2a
font_01_sfnt_off000072aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72AA 18356 bytes
SHA-256: 07f7f5fe088ebb6a81b9aca0d3b7acb37488304f642f9e675d153fcc87cea6c5

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