Malicious PDF — malware analysis report

Static analysis result for SHA-256 58f0fd849c810b79…

MALICIOUS

PDF

35.3 KB Created: 2021-07-03 17:04:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cf68e15bcd83d5ac8a9cf9593f0f3d3d SHA-1: d9a2bd316bb4fe15a3332c30aab2b5a20d7e38fd SHA-256: 58f0fd849c810b79e07cfc4d1ce1d05188367b43df32a2ae771fbdf63f50723e
102 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, identified as a link farm, that direct users to websites offering free in-game currency and items for popular games like Coin Master and Roblox. The ML classifier strongly flagged this PDF as malicious, and the presence of these deceptive links suggests a phishing or scam campaign aimed at users seeking such rewards. No scripts were extracted from this sample.

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/406889139/coin-master-free-spins-2021-ios-game-hack
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/get-minecraft-for-free_GM479516143.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/new-free-money-links-coin-master_GM406889139.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/is-there-a-free-trial-for-roblox-bc_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/apps-to-get-minecraft-for-free_GM479516143.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-spins-coin-master-2021_GM406889139.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/buy-my-free-roblox-clothes_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/coin-master-hack-2021-apk_GM406889139.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/feb-23-2021-free-coin-master-spins_GM406889139.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/coin-master-connection-lost_GM406889139.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/instagram-coin-master-free-spins_GM406889139.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/pubg-uc-100_GM1330123889.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-tiktok-editor_GM835599320.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/how-to-get-free-robux-without-verifying-2021_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/roblox-piano-hack_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-robux-with-no-verification-2021_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-spins-coin-master-2021-no-verification_GM406889139.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/free-robux-with-no-survey_GM431946152.pdf
    • http://stikomyogyakarta.ac.id/ckfinder/userfiles/files/i-got-hacked-on-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000325a.bin
630c1bf110d9f703ffea452549cfc65d166e044460c6486ee4a89a3701fcd517		 pdf-font-stream PDF embedded font (sfnt) at offset 0x325A 23048 bytes
font_01_sfnt_off0000663a.bin
0dfd9ad4574e16d128bb07cca9367f8481bce3726671877faa7810562d13a14b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x663A 18576 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.