Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bd5287c31f6cf6c…

MALICIOUS

PDF

34.1 KB Created: 2021-07-04 10:36:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4802210c564393ee46f7b23fe82dd8bc SHA-1: 4dc8b2c9e52940fa3d75bf8a6da2f9d3fb0e1b7c SHA-256: 0bd5287c31f6cf6c1ecdfc8c9679106349ce5b06e71f1691574185ecc37747a8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a link disguised as a 'free generator / game hack' which is a common lure for malicious content. The ML classifier strongly flagged this PDF as malicious. The primary IOC is the redirector URL, which likely leads to a second-stage payload or exploit.

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/479516143/mcpe-com-game-hack PDF link annotation
    • https://mowana.buan.ac.bw/common_up/buan/files/how-to-get-stuff-that-cost-coins-free-mpe-master_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/jjsploit-v2-roblox-hack_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/free-tiktok-like_GM835599320.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/roblox-mod-apk-hack_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/today-coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/how-to-hack-roblox-plz-i-need-dat-money_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/how-to-know-if-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/roblox-zombie-attack-cheats_GM431946152.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/minecraft-story-mode-free_GM479516143.pdfIn PDF document text
    • https://mowana.buan.ac.bw/common_up/buan/files/where-to-get-free-roblox-clothes_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_off00003234.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3234 22220 bytes
SHA-256: 2deec3304aac4acce5d10d4b35a9a4c95941500a5edffe0a63b66810eca8908b
font_01_sfnt_off000062ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FF 18208 bytes
SHA-256: 5b9f6205a51ad6f1a24fbb99360864f153eea3ec7be1a62b48d9e0e59285a8da

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