Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0679cbd6dcdc4bc…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 12:00:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c683a52c5775bed4c4999851b1e26102 SHA-1: 5f71d9235f7c9a94d9e7475517dcc51dbbbe67e2 SHA-256: c0679cbd6dcdc4bcebd8163a061008877d0fc951c54ffb6298cbcd065c1045fa
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-free-spins-and-coins-group-game-hack PDF link annotation
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/police-sym-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/spin-coin_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-online-free-spin_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/best-roblox-hack-jailbeak_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-hack-100-working_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/roblox-hacking-vpn_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/jamaica-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/pubg-uc-no-verification_GM1330123889.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://lib.akpnbahtera.ac.id/repository/how-to-speed-hack-in-roblox-with-check-cashed-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_off00003147.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3147 22032 bytes
SHA-256: cdb865b4cdca77adbcc15bed5695bdeca36a94568528eeb19e3dfa696c2bf9ae
font_01_sfnt_off00006208.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6208 18488 bytes
SHA-256: 097f03148461b960bf7dfce38b580b2e2c87eb7891c69634875d30035c126cbf

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