Malicious PDF — malware analysis report

Static analysis result for SHA-256 d673c2176d256af6…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 07:55:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 64f812979a677723287ddf6f5b2ba992 SHA-1: 1ddc7bb3337a7b86c1c70b1a40493d0c031f27ff SHA-256: d673c2176d256af619aa76190120177ecda43affcec1250f1818f8e25c73fac3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirector infrastructure, specifically http://netcdn.tw/app/431946152/free-face-roblox-game-hack, which is presented as a lure for game hacks. The document body and embedded URLs reinforce this theme, suggesting a social engineering tactic to drive users to potentially malicious websites. While no scripts were explicitly extracted, the nature of the links and the heuristic firings indicate a high likelihood of further malicious activity, such as downloading additional payloads or leading to phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/free-face-roblox-game-hack In PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/como-ser-hacker-en-roblox-en-todos-los-juegos_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-hack-roblox-to-get-to-the-admin-robux_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/roblox-money-hack-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-get-free-robux-that-is-real-2021_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/roblox-magic-training-hack_GM431946152.pdfIn PDF document text
    • http://www.mondecasa.com/Public/upload/editorfiles/roblox-power-hack_GM431946152.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
font_00_sfnt_off0000316a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316A 23068 bytes
SHA-256: a6e7118b44522e75bdae4cef6fbc9d15f9d7b6e957e9d40b507ab7429b4ede74
font_01_sfnt_off00006551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6551 18652 bytes
SHA-256: d924b7afd2cc958910ed798bdfc78fa153ae3edfa8036ae7e7b02c3772602b10

Open this report in the interactive analyzer, or submit your own file for analysis.