Malicious PDF — malware analysis report

Static analysis result for SHA-256 242d8ab988ed1368…

MALICIOUS

PDF

34.7 KB Created: 2021-07-09 19:18:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e1a6223fd2e95fbe98d44860da820496 SHA-1: 447de7edfc0219afdb2e8b8c5e459ade5a8527d7 SHA-256: 242d8ab988ed1368a3be2bca6fec1b65b4c2b701c87977856cd7e78550b800e8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising free game currency and hacks. The primary lure URL is http://netcdn.tw/app/431946152/blox-land-free-robux-game-hack, which is designed to trick users into downloading further malware or visiting malicious sites. The document body and heuristics confirm the deceptive nature of the content, aiming to exploit user interest in free in-game items.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/blox-land-free-robux-game-hack In PDF document text
    • http://xenonsvjetla.com/files/mcpe_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-faces-from-events-roblox_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/script-roblox-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/hacks-for-roblox-magic-training_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-lumber-tycoon-2-cheat-codes_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-no-human-verification-no-offers_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/robux-for-free-real_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/cute-roblox-outfits-for-free_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-roblox-hack-com-free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/hack-visea-roblox_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-tiktok-emails_GM835599320.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-roblox-mod-menus_GM431946152.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
font_00_sfnt_off0000307a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307A 22712 bytes
SHA-256: e63ef63b9adb7ff30a352da5ca3ffdf6875d82e6ac20752298f70661bdd35ebd
font_01_sfnt_off000062d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62D1 18964 bytes
SHA-256: 3f12ef93e3f94e19068a8415642f40f3a4d95b4d38f37f1bdada02c05cec8b59

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