Malicious PDF — malware analysis report

Static analysis result for SHA-256 690410e609de1b1a…

MALICIOUS

PDF

35.5 KB Created: 2021-06-27 01:17:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4e253c97ba7fcc81189d6150f24e4fcf SHA-1: 1ef481d6ccd9d6e7ffbaca6eb3aadefa0bf28dd8 SHA-256: 690410e609de1b1accb35d9ef93b11e5f2d9ca9dc8a9ad78d4c659fa055bdda8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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.co/app/431946152/how-to-get-free-20210-robux-easy-and-fast-game-hack PDF link annotation
    • http://artistaone.co/userfiles/files/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/pokemon-go-free-meltan-box_GM1094591345.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/coin-master-heaven-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/cheat-engine-roblox-no-survey-no-download-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-free-items-september-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-robux-real-easy_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/oprewards-com-login_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/robux-today_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/how-to-get-auto-clicker-for-roblox-free_GM431946152.pdfIn PDF document text
    • http://artistaone.co/userfiles/files/free-spin-hack-coin-master-2021_GM406889139.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_off00003131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3131 22496 bytes
SHA-256: aa19d3676bb39b73b37a96a391b181d4f27d5460311449544d3db019a663eb80
font_01_sfnt_off0000633d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633D 19740 bytes
SHA-256: 70d878b92ae2337c1a4f7c822be696ab917d798b45188fe464d90fdc0b11a051

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