Malicious PDF — malware analysis report

Static analysis result for SHA-256 78e2b53275feda3a…

MALICIOUS

PDF

34.6 KB Created: 2021-06-26 14:39:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 066cb7abfe3cc584991831eda27e2fec SHA-1: 3a0fc093859f85869dc1ef3c3544e8338d31b382 SHA-256: 78e2b53275feda3a84adfb1269d8588f5159fb14dcd0dcd6b7cfd02c42af6ba1
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous embedded URLs and a document body that advertises free game hacks and cheats, strongly suggesting a phishing or malware distribution lure. The presence of the 'ML_NYX_PDF_MALICIOUS' heuristic firing with a high score further supports its malicious nature. The document likely attempts to trick users into downloading a second-stage payload via the provided links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/pastebin-com-robux-free-game-hack PDF link annotation
    • https://cleansui.com.tw/image/data/files/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/how-to-hack-free-robux-no-downloading-2021_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/youtube-free-robux-scam_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/roblox-hack-game_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_off00002fbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBD 22512 bytes
SHA-256: c8adab81d0f6792dc43322f4a36b3a85811e37fdedca3c8f6f9dfc7c56e3445c
font_01_sfnt_off0000618c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618C 19356 bytes
SHA-256: c59d0f5f3b7a3d13576ba552ce509458f0a35b5f9e46c9a1913ed2e1d4fb1a8b

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