Malicious PDF — malware analysis report

Static analysis result for SHA-256 907d089033289338…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 11:43:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b6d3144d55c2aa8ab8ac0e09221f8259 SHA-1: 0175aa5ea7e87267c972b7b8005e077319ec5352 SHA-256: 907d089033289338712fc002736c92d23c2095ef23836415a61812f987976d3a
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive lure. 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 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/431946152/roblox-free-robux-hack-game-hack PDF link annotation
    • https://library.univthamrinaka.com/repository/hack-roblox-account-passwords-2021_GM431946152.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/coinmaster-twitter_GM406889139.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/free-pink-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/glhtis-how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/best-game-naruto-all-form-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/bloxmarket-free-robux_GM431946152.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/free-gear-in-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/free-roblox-accounts-no-robux_GM431946152.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/coin-master-free-coins-and-spins-today_GM406889139.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://library.univthamrinaka.com/repository/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E1 22284 bytes
SHA-256: 6ce2ee9cc48e1d3615c467e2a8ce605295d605f70f217d4e9096bac2182a1d59
font_01_sfnt_off0000637c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x637C 18960 bytes
SHA-256: 4bbd4e0b11a4de08a120ed278073258e380cedc6aab10c61138cdabd5952661a

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