Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a2e86c9d02acb64…

MALICIOUS

PDF

41.3 KB Created: 2021-04-26 20:15:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2bfc0b806a9adbe2efc9e0b0d469c45e SHA-1: 21feaae6e417b1a043dfc121697d806ddb74fd1f SHA-256: 1a2e86c9d02acb64f8f08946df9d19d61e2398c7becd604fe944fbd50e5f1382
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple heuristics indicating a lure for game hacks and free in-game currency, directing users to external URLs. The primary URL, https://netcdn.xyz/app/431946152/coalesce-roblox-hack-game-hack, is flagged as a redirector for this purpose. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a malicious intent to redirect users to potentially harmful websites, likely for phishing or malware distribution.

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/coalesce-roblox-hack-game-hack PDF link annotation
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/roblox-change-character-free.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-get-100-robux-fast-and-free.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/hacks-para-dungeon-quest-roblox-2021.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/free-robux-generator-no-app-download.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/free-heads-in-roblox.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/free-uganda-knuckles-morph-roblox.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-use-free-models-in-roblox.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/cheat-roblox-jailbreak.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/free-robux-roblox-game-image.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/roblox-denisdaily-free-robux.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000041b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x41B2 27036 bytes
SHA-256: 576887e8e6147303f4c9e1a7f7ec96e7ec2384455d867f53d13988cb02e4b2b6
font_01_sfnt_off00007fbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FBF 18184 bytes
SHA-256: 8e5941068022063d8ed99105289ddfba24774dffc5f8b3a9fa4f70e14838bd37

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