Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d0b54555238b369…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 22:40:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c81ba860da8ff84683247c7b80c890e3 SHA-1: b08cdcde94f172665345b98ada39b4ccad0247e8 SHA-256: 1d0b54555238b369f023f645a74c86a7260c613d6eeab46b2858f14d0c01e845
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/link-for-free-spins-on-coin-master-game-hack PDF link annotation
    • https://tv-transvision.com/ckfinder/userfiles/files/coin-master-hack-apk-latest-version-2021_GM406889139.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/probloxicu-robux-free_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/what-is-the-the-robux-hack-command_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/how-to-get-free-doge-hat-in-roblox_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/tiktok-free-palestine_GM835599320.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/link-for-free-robux_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/roblox-athoi-admin-hack_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/pokemon-go-free-coins-no-survey_GM1094591345.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/free-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/free-robux-videos_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/como-descargar-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/roblox-obby-free_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/how-to-get-free-godly-roblox-exploit_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/coin-master-apk-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://tv-transvision.com/ckfinder/userfiles/files/coin-master-free-spins-and-coins-app-download_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
stream_002_off00003198.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3198 23188 bytes
SHA-256: 9d9eee0fa25544363c7bf43b16b6a743a6a7a83ddeeec14a73b30b3858fd02db
font_01_sfnt_off000065f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65F9 18344 bytes
SHA-256: f56b0ea85f0f4ceaa4b3226630b5e27c33b435ed9466ab3582cda34df5208c0a