Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bcc6b8ec69b1bea…

MALICIOUS

PDF

34.8 KB Created: 2021-06-19 05:14:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: b8165fe0ac449f06c7e01ac3747e51e6 SHA-1: 8be13a93f7dab2b8c3f6bf2f6e337228dc64e85b SHA-256: 5bcc6b8ec69b1beae4b9d99cd1985692e98242df1fd14731ac4d4e0318e7c4a7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous links and a prominent call-to-action related to obtaining free Robux, a popular in-game currency. This suggests a lure to download potentially malicious content or visit phishing sites. The ML classifier also strongly indicated maliciousness, supporting the assessment of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/how-to-get-money-for-free-on-roblox-game-hack
    • https://perpus.poltekkesgorontalo.ac.id/repository/free-robux-without-downloading-anything_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/noob-god-hack-roblox_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/how-to-get-free-robux-2021-no-downloading_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/youtube-roblox-pokemon-brick-bronze-free-money_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/free-robux-generator-for-kids_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/free-robux-secret-video-to-get-free-robux_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/how-to-become-a-hacker-in-roblox-on-ipad_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/dailyrobux_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/robux-hack-2021-no-human-verification-or-survey_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/hack-coin-master-app_GM406889139.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/coin-master-link_GM406889139.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/el-mejor-video-de-hack-robux-gratis_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/free-robux-no-survey-or-human-verification_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/leviving-hack-roblox_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/hack-build-a-boat-roblox_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/how-to-cheat-in-meepcity-roblox_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/free-stuff-on-roblox_GM431946152.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/free-spins-coin-master-blogspot_GM406889139.pdf
    • https://perpus.poltekkesgorontalo.ac.id/repository/free-spins-on-coin-master-links-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030d8.bin
959b5da07cc124f7d176ba308dda0f01e16c2e13dda48dbb291e756a72fcbbd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x30D8 22208 bytes
font_01_sfnt_off00006224.bin
b852fbd25eb8253f2d52f4ecee2a27817668010e65527128e4460267b6353704		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6224 19296 bytes

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