Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf132429bd086c7e…

MALICIOUS

PDF

42.7 KB Created: 2021-05-01 05:46:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 7fba07acc77cae044fd3ac3b9d6fe322 SHA-1: b096652b2904c169f0c916767a3be8d4cf953398 SHA-256: bf132429bd086c7e4445c7e721ae7547ab46332c6a1e2bf0f36171df9f732ee4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as a game hack generator. The embedded URLs and the document body text strongly suggest a lure to trick users into downloading potentially malicious content. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a phishing or social engineering attack.

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/comment-installer-un-cheat-sur-cbro-roblox-franais-game-hack In PDF document text
    • http://technibuild-group.com/uploaded_files/userfiles/files/roblox-hack-generator-secret-hack-revealedfree-robux.pdfIn PDF document text
    • http://technibuild-group.com/uploaded_files/userfiles/files/are-free-robux-games-real.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/name-that-character-roblox-cheats.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/noclip-hack-roblox-jailbreak-download.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-build-your-dreams-hack.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/free-password-generator-roblox.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/how-to-hack-roblox-passwords-2021.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/knife-server-roblox-hack-script-pastebin.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/how-to-hack-on-roblox-apocalypse-rising-2021-august.pdfIn PDF document text
    • http://technibuild-group.com/uploaded_files/userfiles/files/hack-para-dragon-ball-rage-roblox-2021.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_off00004574.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4574 26576 bytes
SHA-256: 75642d8b2d0b0ff3b664d13c7202c56e11649d9d95b3489463afcc08b1aba395
font_01_sfnt_off00008307.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8307 19152 bytes
SHA-256: 1607a84ba4ff018f4185f3a2a202d1c43b928a62dd243d952c789aa16bb8ffc9

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