Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f5e2a003618fd22…

MALICIOUS

PDF

44.2 KB Created: 2021-06-14 00:48:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5143e94bb17b2486aa251c44ac78de91 SHA-1: f8157eed46fee823af869fb7e9717035734ff9a8 SHA-256: 5f5e2a003618fd222853235c97e6344205db34805d8b97d68fcbab64b5395b24
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/free-shavaka-roblox-id-game-hack PDF link annotation
    • http://library.atim.ac.id/repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-coins-on-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-get-verified-on-tiktok-for-free-2021_GM835599320.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-hack-software-download_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/redeem-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/how-to-hack-someone-on-roblox-like-anonymous-youtube_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-free-robux-bots_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/robux-sign_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/worst-client_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-spin-link_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/infinte-jump-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/offers-for-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/hack-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/cheat-engine-get-free-robux_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_003_off00004cc1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CC1 26324 bytes
SHA-256: bf552279f85ebae1fc25e7e7cc837059111fcc2495cf87e9eeff3db449371fd5
font_01_sfnt_off00008931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8931 18800 bytes
SHA-256: d0f8f0f546938330f44bb718db6a103fc9d7b00e094d10b01d15b6458765655d

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