Malicious PDF — malware analysis report

Static analysis result for SHA-256 232b9c4d9f8f108a…

MALICIOUS

PDF

36.8 KB Created: 2021-07-20 07:10:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 23c7d6df8e2a8b5fc65ef699a5a152b7 SHA-1: 6eca20edcf4ba4d87dd0155f6a584a5f3689de2d SHA-256: 232b9c4d9f8f108a357f6d8d7db58078ac60e11b0c73577f8dfed67b8bcdfdad
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9216

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/free-tiktok-followers-no-human-verification-game-hack PDF link annotation
    • https://torkelson.se/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • https://torkelson.se/images/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://torkelson.se/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://torkelson.se/images/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • https://torkelson.se/images/make-free-robux_GM431946152.pdfIn PDF document text
    • https://torkelson.se/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://torkelson.se/images/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://torkelson.se/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • https://torkelson.se/images/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://torkelson.se/images/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3108 22412 bytes
SHA-256: c75cf725e3dccb839deb59ea18971cd9ff56f445a6e5eccc217055766d164633
font_01_sfnt_off000062b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B7 3124 bytes
SHA-256: d6dd29adb69da7f9a23a5e3791282a61e2f811794f560a0c409c8747766d9102
font_02_sfnt_off00006d71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D71 18456 bytes
SHA-256: 6fa1441c1a321216f6114c799401e851ec7285796cff0c56691a74954fdf2722

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