Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a2bf1ff86cd0e99…

MALICIOUS

PDF

50.1 KB Created: 2021-06-03 18:17:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fef6d5074ddcfe67774affbcaa4ad176 SHA-1: be2a2038a7b7982e6a8c6ef0778583f6042fb832 SHA-256: 7a2bf1ff86cd0e99e93e27fa3d8e22d0daba6e447faf4d3d9299a2b92e59ff60
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a URL associated with free Robux. The document body, though partially garbled, also contains references to 'Google How Do You Get Free Robux' and the same malicious URL. This suggests the document's primary purpose is to lure users to a potentially malicious site through a deceptive offer.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9789

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 https://netcdn.online/app/431946152/google-how-do-you-get-free-robux-game-hack PDF link annotation
    • https://www.talakeel.com/uploaded_files/userfiles/files/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/how-to-get-free-robux-ios-and-pc-october_GM431946152.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/hack-robux_GM431946152.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/kachifpro_GM406889139.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/pubg-600-uc-free-redeem-code_GM1330123889.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/free-coin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/make-free-robux_GM431946152.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • https://www.talakeel.com/uploaded_files/userfiles/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005046.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5046 29716 bytes
SHA-256: c0cf34a474812ba724e82bbe4d1b192d40777200b78d99421df16a6640f69ad7
font_01_sfnt_off000093fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93FE 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00009f28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F28 18972 bytes
SHA-256: 7e42234451cc840f7005e057c881a5adaeb6eb05dfbb8a23217c49a1ae6b06df

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