Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8594d10e51a6ce3…

MALICIOUS

PDF

53.4 KB Created: 2021-05-20 21:09:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 98feebd3118c822a8d34d73823102bb5 SHA-1: 5e72c1f7fd82bbec1b4f785ddcb3e3ed6107443d SHA-256: b8594d10e51a6ce3d271a9b9b19e5552c63c050d2c9edb83d9c38b55f26a8dd3
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a call-to-action phrase, suggesting a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. The presence of a link to 'free-roblox-clothes' and another pointing to an IP address with text about 'Robux' indicates a lure for in-game currency, likely to redirect users to a malicious site or initiate a download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8246

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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-roblox-clothes-for-your-avatar-game-hack PDF link annotation
    • https://www.iseas.com/uploaded_files/userfiles/files/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/pubg-770-uc-ne-kadar_GM1330123889.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/coin-master_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • https://www.iseas.com/uploaded_files/userfiles/files/coin-master-facebook-hack_GM406889139.pdfIn PDF document text
    • http://192.168.0.99/%20%3Cp%3E%3Cp%3ERobux%20is%20the%20in-game%20currency%20for%20the%20online%20game%20Roblox.%20Roblox%20is%20a%20very%20popular%20game%20with%20over%20100%20million%20active%20users.%20Most%20games%20on%20Roblox%20are%20free%20to%20play%20and%20will%20be%20free%20to%20play%20forever,%20but%20some%20famous%20and%20popular%20games%20like%20Welcome%20to%20Bloxburg%20cost%20some%20Robux%20PDF link annotation
    • http://192.168.0.99/%20%3Cp%3E%3Cp%3ERobux%20is%20the%20in-game%20currency%20for%20the%20online%20game%20Roblox.%20Roblox%20is%20a%20very%20popular%20game%20with%20over%20100%20million%20active%20users.%20Most%20games%20on%20Roblox%20are%20free%20to%20play%20and%20will%20be%20free%20to%20play%20forever,%20but%20some%20famous%20and%20popular%20games%20like%20Welcome%20to%20Bloxburg%20cost%20some%20Robux%20(at%20the%20moment%2025%20RbxPDF link annotation
    • 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
font_00_sfnt_off00007a88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A88 23356 bytes
SHA-256: 7de296737c2657fa6826320c403e0fc5154f60fda844ba8ce4f40483a4da23f9
font_01_sfnt_off0000af5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF5A 18860 bytes
SHA-256: 1761c8fbdaafa52a42c2d9c8dd0fbea25e5bec314d4deea8139da4bd569234ce

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