Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb655c9f49f5c3a…

MALICIOUS

PDF

34.6 KB Created: 2021-06-30 17:26:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: b297dcb3f55042529ba85d15371e6813 SHA-1: 301231ec0cb4920967982ff7c6e11dda688d8b88 SHA-256: 2fb655c9f49f5c3a6b48a4f0395ff8b8e077b1ff905985271b16b58a52c06b18
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free currency to entice users to click on malicious links. The embedded URLs, such as http://netcdn.co/app/431946152/roblox-grand-crossing-roleplay-hack-gear-game-hack, are identified as malicious redirectors. The document's structure and content strongly suggest it is part of a phishing or scam campaign, likely intended to lead users to further malicious sites or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/roblox-grand-crossing-roleplay-hack-gear-game-hack In PDF document text
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/anti-speed-hack-roblox_GM431946152.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/how-to-get-a-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/how-to-get-100-robux-on-roblox-free-2021_GM431946152.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/free-followers-hack-roblox_GM431946152.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/roblox-apple-store-tycoon-free-money_GM431946152.pdfIn PDF document text
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/hexus-hack-roblox_GM431946152.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/demon-roblox_GM431946152.pdfIn PDF document text
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://dhs.or.id/new/public/ckfinder/userfiles/files/multigame-aimbot-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/download-roblox-for-free-on-mac_GM431946152.pdfIn PDF document text
    • http://www.dhs.or.id/new/public/ckfinder/userfiles/files/how-to-hack-minecraft-pe_GM479516143.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_off000030c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C8 21884 bytes
SHA-256: 59d0227570557fad911c4f9a023a7d7bee103bd04fa70e4a46ae2cf3f71fdd15
font_01_sfnt_off0000613e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613E 19308 bytes
SHA-256: d34ff8de5e1fb0f575a659b1d227d24d9051b2ae7f940475629c60b708cab942

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