Malicious PDF — malware analysis report

Static analysis result for SHA-256 e43b3c121ae506ca…

MALICIOUS

PDF

34.0 KB Created: 2021-07-03 20:57:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 3667a60a9a534bfd227e1a5ba70a7bec SHA-1: 8f64d2de552b84686979736b01444efd8d60cef7 SHA-256: e43b3c121ae506ca6830079bf6ad0c9b4eff33157d18b4a0233bcf672cb9be50
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 0.9980

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/406889139/how-to-get-coin-master-free-spins-in-email-game-hack PDF link annotation
    • https://www.itc-nekretnine.hr/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/roblox-cheat-engine-unlimited-cins_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/why-is-tiktok-free_GM835599320.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/roblox-murderer-mystery-2-cheat-codes_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-roblox-card-codes-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-to-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-to-get-free-rep-on-roblox-got-talent_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/cheats-roblox-paintball_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/robux-for-free-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coin-master-free-online-game_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/pg-family-friendly-roblox-content-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/roblox-hack-client-mac_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
stream_002_off00002dfc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2DFC 22808 bytes
SHA-256: b9e3d2c53f104c3aa00c76dc17cd91e9d28f84fed8c1db349ed5c130becac9ad
font_01_sfnt_off00006120.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6120 18672 bytes
SHA-256: c55de2333964849f39731cb570fc090e4780defca43c923d13d7351852810530

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