Malicious PDF — malware analysis report

Static analysis result for SHA-256 0da6f89e46282def…

MALICIOUS

PDF

34.1 KB Created: 2021-06-26 02:43:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e127359fbf06ce5fad1ba94ef15094ab SHA-1: 7f162a7266b8cb74ec60744a54fe01aba8894220 SHA-256: 0da6f89e46282defc57975dc84005b8c0fcab5d7c6ee1d825f5c46c9d3ce200c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-risk heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body and embedded artifacts also contain references to game hacks and the malicious URL, suggesting a phishing attempt to trick users into visiting a potentially harmful site. No scripts were extracted from this sample.

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/hack-struicid-stop-start-roblox-game-hack PDF link annotation
    • https://smark.com.tw/image/data/files/free-rs-roblox_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/roblox-ban_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/arrest-me-and-get-free-robux-roblox-jailbreak-roblox-live_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/pokemon-go-free-egg-incubator_GM1094591345.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/roblox-download-free-chrome_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://smark.com.tw/image/data/files/free-spins-and-coins-for-coin-master-game_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_003_off00005f24.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5F24 19368 bytes
SHA-256: cf4649c8c810a50f53053f99c2caf594acbe40052e05bb4361f650f7a4c9ff8c
font_00_sfnt_off00002f9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F9C 21696 bytes
SHA-256: 24facf0636025f81cd61a87c516a0f620c6c2edb898467727bfddc4db97ac3a0

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