Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0e28a6d23d1d5aa…

MALICIOUS

PDF

35.8 KB Created: 2021-07-04 12:43:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 69af8aee01d5a6d33b542eef07a85087 SHA-1: aabc00e71e92bc372d89bb8961ad0ba49a002050 SHA-256: e0e28a6d23d1d5aadf85f70ca3f09d0aa4eab5be03986319547f57feb33dbe5e
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.tw/app/431946152/free-robux-with-no-survey-game-hack PDF link annotation
    • http://fobh.net/userfiles/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/100-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://fobh.net/userfiles/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/hack-my-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/robuxglobalcom_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/get-robux-today_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/pubg-uc-vn_GM1330123889.pdfIn PDF document text
    • http://fobh.net/userfiles/files/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://fobh.net/userfiles/files/roblox-emergency-response-liberty-county-hack-script_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://fobh.net/userfiles/files/free-roblox-thumbnail_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_off00003227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3227 22912 bytes
SHA-256: 000220bdd2aa13e99621573f92e56504500842e45091af50d4e25f97900003ac
font_01_sfnt_off0000656c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x656C 19600 bytes
SHA-256: ca7a388806d592ab2d8315d83d492e3246b9fd008add48962cfd3e7e10a7156d

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