Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c3945a8207b7adc…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 14:07:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 270bf1a5aa7fa8ac7ea49a5443a2009d SHA-1: c54b5d0baf168e93390f5c278f84fe66a50ae503 SHA-256: 2c3945a8207b7adcc5ffb65dd01d00d0aaf9f7b9312b09437f7b568fd1cfaa42
160 Risk Score

Malware Insights

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

The PDF file contains multiple links pointing to known malicious redirector infrastructure, specifically advertising 'free generator / game hack' lures. The primary malicious URL identified is http://netcdn.tw/app/835599320/tiktok-free-view-59-game-hack. This suggests the document is designed to trick users into visiting potentially harmful websites, likely for further malware delivery or phishing.

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/835599320/tiktok-free-view-59-game-hack In PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/cheat-engine-bypass-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/infinity-heroes-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-dominus-messor-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-tiktok-followers-without-verification_GM835599320.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-robux-with-cheat-engine-2021_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_off0000316b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316B 22824 bytes
SHA-256: 067558900a76a2d6825d65fdae83d2fe650bab85e9905bf6b8723174afa63d44
font_01_sfnt_off000064a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A5 18568 bytes
SHA-256: 7dc6885a6f20bf0be4ed42a542e1a303df4ad0923424dc9dee00985bc4b46523

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