Malicious PDF — malware analysis report

Static analysis result for SHA-256 a698d0e4d8f34dd6…

MALICIOUS

PDF

36.0 KB Created: 2021-07-04 11:20:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 22183a97bb886404fe953bd3bbae7239 SHA-1: abd07970e0e857603ad733d9b7ed7ac0758cdb2c SHA-256: a698d0e4d8f34dd6fa8077cb1f9d63cb6894b4583c816445a769be978853f83c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/406889139/coin-master-daily-free-cards-game-hack PDF link annotation
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/roblox-robort-free_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-no-download-no-survey_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/youtube-roblox-cheats-for-robux_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021-no-hack-easy_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/free-vip-roblox-games_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/jjsploit-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/hacks-for-mibile-for-roblox_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/free-robux-ios_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/free-minecraft-items-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/minecraft-world-free-download_GM479516143.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/free-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.payaljewelleryfiji.com/uploaded_files/userfiles/files/free-robux-hack-no-survey-2021_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_off000035ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35EE 22964 bytes
SHA-256: eadb2b3dc4cf849e5842718b7d33bbef8c2c7bca5ce91529d2845ff6cbe0136b
font_01_sfnt_off0000694e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x694E 18592 bytes
SHA-256: 4b41fa3a93d7cc8eb8c53c2e27fa3dcdcbea087b577c0c6a24349636d46b5586

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