Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ba884a68201abeb…

MALICIOUS

PDF

40.1 KB Created: 2021-04-29 08:45:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 15b04016ac852bd77d636473d559db9f SHA-1: 7de7dc3c38141b8892c262536e1800ec4d40fc83 SHA-256: 8ba884a68201abebe627c2d7182c08731ec0571de97748ac9dded4dda2c82a2b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks. The embedded URLs are designed to lead users to potentially malicious websites, likely for further exploitation or credential harvesting. The document's content and heuristic firings strongly suggest a phishing or scamming attempt.

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/hacks-for-roblox-noclip-game-hack In PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/hack-para-jailbreak-roblox-2021-dinero-infinito.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/free-robux-no-download-2021.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-hack-download-2021.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-account-with-robux-free.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/hack-for-roblox-bee-swan-sumlaitor-may.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/how-to-hack-roblox-im-poison.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/how-to-get-free-knives-in-mm2-roblox.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/como-hackear-roblox-2021-en-android.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/roblox-toy-codes-free.pdfIn PDF document text
    • https://distribuidorademoveis.com.br/ckfinder/userfiles/files/free-robux-generator-with-no-survey.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_off000040e3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x40E3 25720 bytes
SHA-256: bbd36c9ff5efc353e2a81ec5651b350418fefe05ca572f6527487b2db5811b27
font_01_sfnt_off00007a0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A0D 18640 bytes
SHA-256: 7aa8e240851e7e43579bc0684c26e1b1556949b23e623b5d02dae86df8e185b1