Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e2e716a4beb19cf…

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 19:06:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: cd0ce14789232652dd735df1f306c687 SHA-1: 1b51f3ac014d764f97e88fd9bb61d4971206964b SHA-256: 8e2e716a4beb19cf579b9aca015b3771fcf773d3fb115a978108db7cc5225037
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.co/app/431946152/guest-roblox-face-hack-game-hack PDF link annotation
    • https://perpustakaan.itda.ac.id/repository/unlimited-jump-hack-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-draw-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/hack-coin-master-using-cheat-engine_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-hackgz_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-gravity-cheat-engine_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-hack-computer_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/roblox-hack-week-crafting_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/coin-master-hack-android_GM406889139.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-vip-server-for-lab-experiment_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/free-roblox-account-with-robux-on-it_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/rbx-sites_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/robux-free-72-claim_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-robux-for-free-pc_GM431946152.pdfIn PDF document text
    • https://perpustakaan.itda.ac.id/repository/how-to-get-a-free-name-change-on-roblox_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
stream_002_off00002fa9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FA9 22968 bytes
SHA-256: 7536fc26f2d9d49ef0892a7aef3ccf5e5aa70990ac5ea4b5ca5e4e93fc7732f5
font_01_sfnt_off0000625e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625E 19064 bytes
SHA-256: 2ec473295061e89949a2e0462d60a1c0d5baafda5d395231ad57f8d370e4cdfa

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