Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee1b3faef334fe0…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 12:47:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 24c2daf53cca51a18ce592b327ae6225 SHA-1: 123ec40f77d2272bc726e3cdc30add37eec5fe3e SHA-256: 9ee1b3faef334fe09a294af31d19d61e0ad0f03c2c3e4f3a9119f84e4e637522
102 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are related to free game downloads and hacks, suggesting a lure for users to click and potentially download malware. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the ML classifier strongly flagged this PDF as malicious. The document body, though partially corrupted, contains references to games and URLs, reinforcing the phishing or malware distribution intent.

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.tw/app/479516143/minecraft-java-code-free-game-hack PDF link annotation
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/roblox-welcome-to-bloxburg-for-free_GM431946152.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/roblox-sex-game-free-download_GM431946152.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/roblox-body-swap-potion-free_GM431946152.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/omo-recuperar-una-uenga-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/free-robux-com_GM431946152.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/roblox-bee-simulator-hack-download_GM431946152.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/free-roblox-card-codes-2021-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/was-minecraft-ever-free_GM479516143.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/how-hack-into-denis-acount-on-roblox_GM431946152.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/free-robux-real_GM431946152.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/how-to-get-free-10k-robux-by-redeem-code_GM431946152.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/coin-master-daily-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://jdih.ptun-denpasar.go.id/assets/CKImages/files/pokemon-go-free-pokeballs-promo-code_GM1094591345.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_off0000329a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x329A 22112 bytes
SHA-256: 340fa3111b04bb97ca0d52829b579f7f8e70f3fbd6d0bb2662bbea6584d706f6
font_01_sfnt_off0000639b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x639B 18452 bytes
SHA-256: 16671fd22d5178f4ee91bd1dac9de86b871bb3f71416cabb6af28097c9991cf7

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