Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e0ec2b5e3bcc918…

MALICIOUS

PDF

41.3 KB Created: 2021-05-01 13:59:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 213c78b558a59c805095f99f0f72116f SHA-1: b109d3d08ff2c5458b4805b46b1aa44a18bec699 SHA-256: 2e0ec2b5e3bcc91830291d932b75b10ac4308d6199e682d0b86d61bbb01bf5c0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action to download a 'game hack' or 'free Robux generator'. The primary link redirects to known malicious infrastructure, indicating a phishing or scam attempt. The document body and heuristics confirm the lure is related to obtaining in-game currency or cheats for Roblox. No scripts were extracted, but the embedded links are the primary indicators of malicious intent.

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-robux-no-human-verification-or-survey-or-download-game-hack In PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-build-a-boat-for-treasure-fly-hack.pdfIn PDF document text
    • http://technibuild-group.com/uploaded_files/userfiles/files/free-robux-instant-work.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/hot-to-hack-roblox-games.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/free-robux-cards-tk.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-speen-hack.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/free-copy-escape-obby-for-roblox-game.pdfIn PDF document text
    • http://technibuild-group.com/uploaded_files/userfiles/files/roblox-festive-paintball-cheat.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/no-survey-anti-bots-allowed-robux-hacker.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/free-roblox-account-2021.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/how-to-use-cheat-engine-on-roblox-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_off000042dd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42DD 24624 bytes
SHA-256: 69f036106f268eaf5dc3f3bbaf564e7c3272f18430e5b051a4d87ac97c27c83b
font_01_sfnt_off00007b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B7F 19736 bytes
SHA-256: 59e4374f8172b973ba9217c83b5ce6b26483f5ae1ceeffd331798f57e1658bad