Malicious PDF — malware analysis report

Static analysis result for SHA-256 b735f36b83eb9420…

MALICIOUS

PDF

35.4 KB Created: 2021-06-26 01:11:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 64843efe9b3b63deb563485bcdfe202c SHA-1: c2d6198009c5820d7eaa71dba61281e5ae8e41f2 SHA-256: b735f36b83eb9420bec147e6225a6cb6fcc34bacc3996e205782ca4ca0916109
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free game hacks' to entice users to click on a malicious URL. The primary URL, http://netcdn.co/app/431946152/free-roblox-paddwords-game-hack, is flagged as a redirector for game hacks, strongly suggesting it leads to a payload download or further malicious content. The ML classifier also indicated a high probability of maliciousness.

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.co/app/431946152/free-roblox-paddwords-game-hack PDF link annotation
    • https://lib.bunghatta.ac.id/app/repository/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-a-bizarre-day-cheats_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/greenwood-town-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/treasure-hunter-simulator-roblox-cheat-engine_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-hack-no-human-verification-or-offers_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/robux-page_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-valkyrie-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hacks-for-roblox-2021-for-mac_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-daily-free-coins-link_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-skins-boy-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-hack-on-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hacks-menu-for-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-disney-plus-accounts-tiktok_GM835599320.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-roblox-account-with-rpbux-password_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hack-para-dragon-ball-rage-roblox-2021-android_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3352 22468 bytes
SHA-256: 7214c7a1b237b70d5e3a500ce236fed4987ba1a1117f8fcefb177b4d4abc6043
font_01_sfnt_off00006506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6506 19140 bytes
SHA-256: 1c03af4b0581d77d4cd82ca987f5541eec8ea139f2e540f7689b1a3d8bfa2e40

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