Malicious PDF — malware analysis report

Static analysis result for SHA-256 50727419c179fedb…

MALICIOUS

PDF

41.3 KB Created: 2021-05-01 06:40:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 64535b01e6a9065c927d6436940a6524 SHA-1: 303067c50200b489a6abb78b2764739a03394ab9 SHA-256: 50727419c179fedbc70702d1e855ee05d93c8c6db0845af344d9919901d4a8f6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, with one prominently advertised as a 'game hack generator' for Roblox. This link, 'https://netcdn.xyz/app/431946152/how-to-hack-the-creater-roblox-game-hack', is flagged as a malicious redirector. The document body also contains a call-to-action phrase, reinforcing the lure. The presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a malicious site, likely for phishing or malware distribution.

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-hack-the-creater-roblox-game-hack In PDF document text
    • https://lib.stie-yai.ac.id/repository/free-roblox-money-codes-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-actually-works-pink-sheep.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-robux-lmao.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-roblox-accounts-rich.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/blox-best-free-robux.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-play-heroes-online-roblox-for-free.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hack-de-robux.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-robux-cheat-engine-download.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/aimbot-hack-roblox-phantom-forces.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/fightfor-glorton-free-l-robux.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_off000040ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40FF 27396 bytes
SHA-256: 26caa87a044300b83b63c23cdc5344951b820291091ec4535b103f0ed4248d22
font_01_sfnt_off00007e78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E78 18616 bytes
SHA-256: fc99baf0cc0eb6a25e166899c41d69b65f70c27ca3f569c10a1a63cf6c62c6d0