Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa0de8a4dbb6da17…

MALICIOUS

PDF

43.9 KB Created: 2021-05-16 04:36:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2d43a25149e924af02ea338dffc9540d SHA-1: a8478b48f3071621ba633061de91c75e38dbbcc0 SHA-256: fa0de8a4dbb6da17b6e77817ef9be3ccd9c2d1482d7ea2361acec853037809e7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are structured as SEO-optimized links for game-related cheats and freebies. The ML classifier strongly indicated maliciousness, and the presence of a call-to-action phrase suggests a user-interaction lure. The primary IOC is the domain 'netcdn.xyz' which hosts a direct link related to 'cm-free-spins-and-coins-game-hack'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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 https://netcdn.xyz/app/406889139/cm-free-spins-and-coins-game-hack
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/how-long-is-the-minecraft-free-trial_GM479516143.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/how-to-get-roblox-credit-for-free_GM431946152.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/master-coin-free-spin-daily_GM406889139.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-game_GM406889139.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master-2021_GM406889139.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/coin-and-spin-link_GM406889139.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/roblox-girl-avatar_GM431946152.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/roblox-hack-codes_GM431946152.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/free-pet-food-coin-master_GM406889139.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/coin-master-free-spain_GM406889139.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/how-to-free-robux_GM431946152.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/coin-master-hack-https-coinms-net_GM406889139.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/free-coin-master-spin-app_GM406889139.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/coin-master-offline-hack_GM406889139.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-pc-download_GM406889139.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/best-free-minecraft-server-hosting-reddit_GM479516143.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/get-free-robux-no-human-verification_GM431946152.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/free-robux-not-fake_GM431946152.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/free-robux-codes-no-verification_GM431946152.pdf
    • http://mtsjeumalaamal.sch.id/__statics/gudangsoal/files/coin-master-hack-online-generator_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000480a.bin
7c7d609d90fcda77073a900f8d5e4a7cfba0fbeedacb233a7f9cac6df51c72ed		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x480A 24760 bytes
font_01_sfnt_off00008084.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8084 2840 bytes
font_02_sfnt_off00008a35.bin
6c27acc7e1a27f4dd98d9cdf7a00649578deada87f4d5bf77ad692372392325d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A35 17988 bytes

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