Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f71d793abab07b6…

MALICIOUS

PDF

34.9 KB Created: 2021-07-07 08:39:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 17c0ab4f03283000f6f8059c1d6a024e SHA-1: b04a54dc5df7a71887af0ad0d1f38b311386fcbf SHA-256: 6f71d793abab07b6c7985f12065bc5ba969cf2a729dad8e9253f8fc06c9e04d1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to a redirector infrastructure, specifically advertising 'game hacks' and 'free generators' for popular games like Roblox and Coin Master. The primary link, http://netcdn.tw/app/431946152/blox-world-free-robux-game-hack, is flagged as malicious and part of a redirection scheme. The document's content and embedded URLs strongly suggest a social engineering lure to trick users into downloading further malware or visiting malicious sites.

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/blox-world-free-robux-game-hack In PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/roblox-hacks-jhon-doe_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/real-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/get-free-robux-no-codes_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-to-hack-jailbreak-roblox-noclip_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/v3rmillion-roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/coin-master-free-spins-link-hack_GM406889139.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/hacker-warning-roblox-id_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/free-robux-no-human-verification-or-survey-or-email_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/downlos-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/qtx-roblox-download-free_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/script-to-hack-generator-of-robux_GM431946152.pdfIn PDF document text
    • http://www.furuihp.com/Public/upload/editorfiles/how-you-get-free-robux_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_off0000307c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307C 22464 bytes
SHA-256: 7751101ea2a53bf7c7bdb96c5e4296c29f5dceebfadd836bcca98030d5ac040f
font_01_sfnt_off000062c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62C9 19160 bytes
SHA-256: 42e554ef2c91bbb5af350d4b1f45d0a0f829397bc38bc7c2009f5bdaf8074c39

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