Malicious PDF — malware analysis report

Static analysis result for SHA-256 ece6244b003a6b72…

MALICIOUS

PDF

41.6 KB Created: 2021-04-28 11:01:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 26f264bd01b5372266fa859a7a096d21 SHA-1: 96b6bf586ea4c69feb629adea17381d678fcc9f5 SHA-256: ece6244b003a6b72f5ad46563a923e540dc579871417935700d75426b1471688
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and a document body that lures users with the promise of 'free Robux' and game hacks. These links redirect to a known malicious infrastructure, indicating a phishing or scam attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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/how-to-get-free-robux-from-google-game-hack In PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-denis-shirt-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-does-hacking-in-roblox-work.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/gun-hack-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-hack-draw-it-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/divine-free-robux.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-click-teleport-hack.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-deadzone-hacks.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/downlaod-fly-cheat-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/prisonbreaker-v15-hack-script-roblox-pastebin.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/free-robux-codes-2021-not-used.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_003_off00004353.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4353 26480 bytes
SHA-256: 362aa09372ac57321e7ca1fc9507af082466c21a52079d3584450529f121450e
font_01_sfnt_off00007f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F12 18904 bytes
SHA-256: 30b8d2d8031a8bf68cb7e4fdf819b84678e13737854ba50690fee448d56d48e0

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