Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb43bd5fe7a00477…

MALICIOUS

PDF

43.2 KB Created: 2021-04-25 22:27:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2310abf56fc89206d05bbd56674fc5a5 SHA-1: eaa886589e0252586bdbbead42d7771c380a9485 SHA-256: eb43bd5fe7a0047722eb1897d89b3e15855fe01d0b803b26cc6cb488725ede56
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as a "free generator / game hack" lure. The document body explicitly contains the phrase "CLICK HERE TO ACCESS ROBLOX GENERATOR" and directs users to the malicious URL. The presence of multiple embedded URLs and the critical heuristic firings strongly indicate a phishing or scam attempt designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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/artmoney-robux-hack-game-hack In PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-ability-spam-dq-hacks.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/tshirt-nike-for-free-roblox-of-2021.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-hacking-apps-2021.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/how-to-hack-on-ipad-roblox.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/free-beyblade-roblox.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-robux-for-free-com.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/what-is-the-secret-code-to-get-free-robux.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/cheat-rocket-roblox.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/amon-magi-roblox-free.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/ben-ten-roblox-game-online-free.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_off000044d0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x44D0 28304 bytes
SHA-256: e34e3b468fb3584d1ac4dc52a0214ac29ecd6c9b7ea2dd26b3506c8fa9a42c22
font_01_sfnt_off0000858e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x858E 18792 bytes
SHA-256: 579304da4532e39f3e78317fcc0e8aa8c6b64ea8ed1db1d98b6a8f1cd3e45e19