Malicious PDF — malware analysis report

Static analysis result for SHA-256 152c4d8a98b05a37…

MALICIOUS

PDF

43.3 KB Created: 2021-06-10 14:20:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 22a1fa0876e1a1e30b02181202dd0e8e SHA-1: 0bd1d98171ca3f93c02958d77cbbfe0d57d15396 SHA-256: 152c4d8a98b05a3744c1ae92d306025c2de80f4ee3615e6422e9886bd17609c1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action phrase designed to lure users into clicking on URLs that promise free Robux or game hacks. The primary URL, https://netcdn.tw/app/431946152/free-robux-just-email-verification-and-done-game-hack, is associated with a game hack lure. The document's structure and embedded links strongly suggest a phishing or credential harvesting attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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 https://netcdn.tw/app/431946152/free-robux-just-email-verification-and-done-game-hack PDF link annotation
    • https://art-concept.gr/images/good-hacking-site-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://art-concept.gr/images/roblox-free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • https://art-concept.gr/images/roblox-tony-stark-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/instagram-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.art-concept.gr/images/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://www.art-concept.gr/images/free-robux-group-payouts_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://www.art-concept.gr/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • https://art-concept.gr/images/free-roblox-exploits-loadstring_GM431946152.pdfIn PDF document text
    • http://www.art-concept.gr/images/are-minecraft-realms-free_GM479516143.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_off000048cb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48CB 25428 bytes
SHA-256: d35d2a94bf3bcc052b48d05402bcd137b9572df2aeb8a5e3537e6b71211ffe43
font_01_sfnt_off000083e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83E5 19444 bytes
SHA-256: 057c071778f8b0bc34fc0971e7305b839ad40ce23fb2900bff252538460f2d7a

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