Malicious PDF — malware analysis report

Static analysis result for SHA-256 49810a045938f9d0…

MALICIOUS

PDF

34.9 KB Created: 2021-06-27 18:55:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1ee727816ffd32ea241d325841570377 SHA-1: 64bf7ba7c4ef79173cb6fe5c7147bb11046a75b5 SHA-256: 49810a045938f9d092e55d12e309d5a840aa787d984df281c736ab0b73b57d61
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document uses a lure of free game hacks and currency for popular games to trick users into clicking embedded links. The primary link, http://netcdn.co/app/431946152/roblox-continue-as-a-guest-for-free-game-hack, likely leads to a malicious download or further phishing page. The ML classifier strongly supports the malicious verdict.

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/roblox-continue-as-a-guest-for-free-game-hack PDF link annotation
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-coolkid-hack-download_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/extreme-injector-hack-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/how-do-u-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-murder-mystery-2-wls-3-hack_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-robux-legit-no-virus-click-here_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/free-roblox-obc-codes-2021_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/rblx-gg-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-kostenlos-robux-hacken_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-strucid-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/village-4-coin-master_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-free-catalog-things_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-broken-bones-4-hack_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/me-hackearon-la-cuenta-de-roblox_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/enter-this-secret-code-for-5m-free-robux_GM431946152.pdfIn PDF document text
    • https://repository.stikesindramayu.ac.id/repository/roblox-2-player-company-tycoon-cheats_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_off00003051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3051 22860 bytes
SHA-256: b2ed1738366f8af53ac927567a20338f61cd5ee5119bfeea27cb644f131e9908
font_01_sfnt_off000063ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AE 19012 bytes
SHA-256: bc23b313f033a8b4becae050583bdb37896160cca1c99bc9e52d0a84992ac3a0

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