Malicious PDF — malware analysis report

Static analysis result for SHA-256 28477e290a275b94…

MALICIOUS

PDF

49.1 KB Created: 2021-06-02 21:36:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7630d580657d8d7a73f8f4aeba480978 SHA-1: a9a5afca88b34e07e1a5f578242a2ba34015b69e SHA-256: 28477e290a275b94a53d6e4852ca8db1fba7f135705a82e06424c742e241b606
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 0.9796

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.xyz/app/431946152/roblox-executor-2021-free-game-hack PDF link annotation
    • https://creationegyptco.com/userfiles/files/link-for-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/hack-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/how-do-i-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/minecraft-bedrock-free_GM479516143.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/easy-robux-today-com_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/free-cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/roblox-devil_GM431946152.pdfIn PDF document text
    • https://creationegyptco.com/userfiles/files/robux-today_GM431946152.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_off000051f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51F1 27764 bytes
SHA-256: aacaa9a622e48a0a679b96f7f3a4b458c26e3a24a55326fa7176d871bb833d40
font_01_sfnt_off00008f51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F51 3924 bytes
SHA-256: b746ba3a57b90e08879572bbe7881df15a71c38b09470fbbade98a25a8f1731d
font_02_sfnt_off00009c25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C25 18596 bytes
SHA-256: cf988dfebe56ae51bddba7257ad83792c48357347267dd90aff4c7308e9b11d6

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