Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dc4cc4a9ee6da56…

MALICIOUS

PDF

39.8 KB Created: 2021-04-29 08:27:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: c66a9efd415f389e35a0e7e6b22862de SHA-1: b04a2b6d6605250b22b9fb8f2384d89c7631ba2a SHA-256: 1dc4cc4a9ee6da562d0140da209ead693f41d1814521080917d5e8fbacc643dc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks. The primary link, https://netcdn.xyz/app/431946152/free-airport-roblox-game-hack, is identified as a malicious redirector. The document's structure and embedded links suggest an attempt to trick users into visiting malicious sites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-airport-roblox-game-hack In PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/roblox-walk-through-walls-cheat-engine-jailbreak.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/how-to-get-free-faces-on-roblox-no-download.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/how-to-become-a-hacker-on-roblox-jailbreak.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/how-to-hack-into-anyones-roblox-account-2021.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/free-cookie-codes-for-roblox.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/increible-hack-de-robux.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/fort-hood-texas-hacks-roblox.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/roblox-group-free-clothes.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/roblox-report-hacker.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/easiest-way-to-upload-audio-on-roblox-for-free-2021.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_off00004161.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4161 24960 bytes
SHA-256: 6f45a6291ee9098e6bd64a1e62247ca88363f78522e889dd06c95e9ad9e2fc63
font_01_sfnt_off00007996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7996 18348 bytes
SHA-256: 7bae54d9d990f27b46b34965f7ff37e3dda67e03c62ff3740b6eef4a54c730f8