Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0cc77ec3fa01cc7…

MALICIOUS

PDF

47.8 KB Created: 2021-06-11 02:06:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 450159c81da550b1ef0af765252203bc SHA-1: 20fc68276ce393068fe0b3f7dd5735e8f7f7c6bc SHA-256: d0cc77ec3fa01cc7de8dd6924332941807aaa30767d46b94a4f10c5a4fcd7270
122 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 0.9832

Heuristics 5

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.tw/app/431946152/protosmasher-free-download-roblox-game-hack PDF link annotation
    • http://msfs-eastafrica.com/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-hack-app-ios-download_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/how-to-cheat-on-eviction-notice-roblox_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-hack-apk-download-2021_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/how-to-get-any-item-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/pink-dimond-robux-hack_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://msfs-eastafrica.com/images/coin-master-link_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_004_off00005461.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5461 28344 bytes
SHA-256: ac89dee4fe30ddb14fe99e2aca51b88e2ad22319b773a20005d536d1d8624b41
font_01_sfnt_off00009531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9531 19364 bytes
SHA-256: f5b951cb5699c7b436945b5215bbbdc4e7864377e50cb6c6a833973b2130f230

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