Malicious PDF — malware analysis report

Static analysis result for SHA-256 62b94767dae6962e…

MALICIOUS

PDF

33.8 KB Created: 2021-07-08 07:34:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 57682e329a67c72aa124945b02fc15cb SHA-1: 55201cddb87e6eb82fe89b660bfe1205ab84024b SHA-256: 62b94767dae6962ef515de20e817afb0549945c2f2c89a9797f2867712b81086
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for free game currency and hacks, directing users to the URL http://netcdn.tw/app/431946152/how-can-u-get-free-robux-game-hack. This URL is highly suspicious and likely leads to a phishing page or a download for further malicious content. The ML classifier also strongly indicated maliciousness.

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/431946152/how-can-u-get-free-robux-game-hack PDF link annotation
    • https://www.dahu-villa.com.tw/upload/files/free-tiktok-likes-and-fans_GM835599320.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/minecraft-account-hacked_GM479516143.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/dominus-rex-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/coin-hackhub-coin-master_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/roblox-any-game-ban-script-hack_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/coin-master-gold-cards-free-link_GM406889139.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.dahu-villa.com.tw/upload/files/appbountynet-free-robux_GM431946152.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_off00002d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D84 22388 bytes
SHA-256: dd8472240ff53c3867d56536456d07a94aa56bf884ae6d9d2b0b81534b37f08e
font_01_sfnt_off00005f06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F06 18984 bytes
SHA-256: 4698faf456f89a42db1aab957ed0472ea92275296e6b47032fd7fe1dc79199a2

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