Malicious PDF — malware analysis report

Static analysis result for SHA-256 33cdc4d15c68f672…

MALICIOUS

PDF

49.9 KB Created: 2021-05-12 21:05:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 69df579f3ca160b7a0b99ba4402428a0 SHA-1: f2da0e524c41f47253d93cb95066e2c52748d321 SHA-256: 33cdc4d15c68f6729a394a0999d3b47656c4a9281c435136986c8ea23206bf04
82 Risk Score

Malware Insights

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

The PDF contains embedded URLs and heuristics indicate it is a payment redirection lure, likely attempting to trick users into downloading a malicious file by promising in-game currency. The document body contains references to 'Robux' and a URL pointing to a 'robux-game-hack', reinforcing the social engineering pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9349

Heuristics 4

  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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/431946152/robux-game-hack
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-blog_GM406889139.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-apk-35-8_GM406889139.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/completed-coin-master-hack_GM406889139.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/free-robux-app-real_GM431946152.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-as-a-kid_GM431946152.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link_GM406889139.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/robux-hack-generator_GM431946152.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/roblox-robux-hack_GM431946152.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/coin-master-code-hack_GM406889139.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/free-robux-no-gift-card_GM431946152.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/free-spins-coin-master-generator_GM406889139.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/coin-master-free-spins-twitter_GM406889139.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/how-to-hack-and-get-free-robux_GM431946152.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/minecraft-116-free_GM479516143.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/minecraft-pocket-apk_GM479516143.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/coin-master-hack-app-link_GM406889139.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/coin-master-free-soins_GM406889139.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/best-free-minecraft-server-hosting_GM479516143.pdf
    • http://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdf
    • https://elearning.mtsamanahruteng.sch.id/__statics/gudangsoal/files/rbl-gg-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c21.bin
54bff9bedc707775a18bc6c5bae1be3c8a8d4a9ef40d50ee8bbb8b9ee17620dc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C21 25536 bytes
font_01_sfnt_off0000873b.bin
7ebedd6b182173c8e55836cb0d114b2c4a0ac85c96a51b9f0706c935f8415fea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x873B 8252 bytes
font_02_sfnt_off0000a24f.bin
ccf20ca1ad80d0cd2f0d464461636129858ae353cf2c3769b35ef20048afdef0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA24F 17852 bytes

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