Malicious PDF — malware analysis report

Static analysis result for SHA-256 e683c16d01a694f6…

MALICIOUS

PDF

35.8 KB Created: 2021-06-25 10:02:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 836eaaafe7835737fa4c48552ecfbcd3 SHA-1: 125875c627c764bc78705e049948b6c9a7d3cd88 SHA-256: e683c16d01a694f66dc93b745b8a35aef866bf26681a8f8c1a14df860b0f4a3c
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/how-to-hack-accoutns-on-roblox-october-2021-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-2-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/pokemon-go-free-trade-evolution_GM1094591345.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/make-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-spawn-models-in-roblox-with-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-promo-codes-list-free_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-old-rb-world-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/getrobux-ninja_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off0000338d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x338D 22424 bytes
SHA-256: 90b9e2f9ba791898af9c6cdd275a83c83c1a8b08a56f3fec8c7646ee54335a69
font_01_sfnt_off00006566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6566 19468 bytes
SHA-256: 006f9055257966053a93a9c678eaffaf42d6cb5807cea0d48142ce6169d8d054

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