Malicious PDF — malware analysis report

Static analysis result for SHA-256 8446da7ac07329c9…

MALICIOUS

PDF

42.0 KB Created: 2021-05-12 02:00:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 7bd9ee9e9dc6c7132fcaad54795c9b9b SHA-1: 26ecbab040f2f1f1709f7ad2013bd66de404dd1f SHA-256: 8446da7ac07329c99f7cd71e8fcf6f4d33ee222f5d1db4d1daedcf4da557511b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a 'free Robux generator' and links to external URLs that are likely malicious. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and the nature of the lure suggest an attempt to redirect the user to a site that may host further malicious content or exploit kits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-robux-generator-for-kids-game-hack PDF link annotation
    • https://www.tartineartisanal.com/images/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/moon-active_GM406889139.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/coin-master-heaven-free-spins_GM406889139.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/coin-master-cheats-for-free-spins_GM406889139.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/coin-master-free-spin-and-coins-links-home_GM406889139.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/get-more-robux_GM431946152.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/coin-master-spin-hack-link_GM406889139.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/hack-coin-pro-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/coin-master-hack-tool-v1-9-pc_GM406889139.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/daily-coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.tartineartisanal.com/images/free-spins-and-coins-coin-master-link-2021_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_off000047b1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47B1 25096 bytes
SHA-256: f57090c77ddc47f087851db8a55edf28309bb2e0d5d2db472325149e4c66bdbd
font_01_sfnt_off00008060.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8060 18640 bytes
SHA-256: 699ebd5d78640cc812bbb586150daa4d415ceda65572c7c56e250d7f18cab54c

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