Malicious PDF — malware analysis report

Static analysis result for SHA-256 7124722d99d2ed88…

MALICIOUS

PDF

33.3 KB Created: 2021-07-05 00:52:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: b5ab1f9047bec5a59601456b5d8c8af8 SHA-1: a885a385d39973786aa856caecc7e42d307d5a96 SHA-256: 7124722d99d2ed88d68e1a8038b0463f2dee40e57b78af0641c405e5280aecdc
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/free-spins-coin-master-app-game-hack PDF link annotation
    • https://library.sman1berau.sch.id/repository/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-offers-free_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-to-get-free-shirts-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-spin-and-coins-free_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hack-roblox-games-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-faces-roblox-catolog_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robux-link_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-facebook-page_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-no-human-verification-download_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/get-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-roblox-december-hack_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_off00002ea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EA8 22192 bytes
SHA-256: 215a39278ad293b35fe4c18fc3bc2c8965d70a73c241885276cdea98c6c1894a
font_01_sfnt_off00005f8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8F 18176 bytes
SHA-256: e95ed07f9a3392ac9f393b6d3cafc9f79ae200f6e0f71949f87052ae7f0648e8

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