Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dbf3b960b27b024…

MALICIOUS

PDF

35.7 KB Created: 2021-07-06 05:25:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2bcefcd0a079c2926ba3c31a10b0a37c SHA-1: 1c717dc483cd1f9c5672895c70cbd80923e78853 SHA-256: 7dbf3b960b27b024fe9e35e801bc3917e342537aa7c678a60f52b3ab14998b1f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external links, many of which are SEO-optimized and point to pages offering game hacks or cheats. The primary URL, http://netcdn.tw/app/406889139/coin-master-hack-app-2021-download-game-hack, suggests a lure for downloading an application. The presence of a 'download button' heuristic further supports the malicious intent of tricking users into downloading potentially harmful software.

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-hack-app-2021-download-game-hack
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-get-free-faces-on-roblox-phone_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/best-free-roblox-jailbreak-hack_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-when-will-counter-blox-remastered-be-free_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/minecraft-svg-images-free_GM479516143.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-how-to-get-free-pet_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-robux-co_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-robux-codes-2021-not-used_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/wwwfreerobuxroblox_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/coin-master-free-link-daily_GM406889139.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-robux-codes-2021_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-insta-arrest-hack-jailbreak-pastebin_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-spins-coin-master-2021-hack_GM406889139.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-mobile-hack_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/how-to-hack-roblox-mad-city-gui_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-dinosaur-simulator-dna-hack_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/roblox-hack-no-human-verification-2021_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/more-robux_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/robux-hack-no-human-verification_GM431946152.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/free-spins-coin-master-daily_GM406889139.pdf
    • http://perpus.ft.undip.ac.id/pustaka/repository/hccb-hacks-roblox_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003265.bin
7b449386e3cf9e1d37e0ee54a294530aa19af96aef28317b1554849e4804b6f8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3265 22992 bytes
font_01_sfnt_off00006603.bin
08c3d26020315796c296df9400c9a2a920b0dbbe4ac3986bc7fb3bd2c9b27f96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6603 19160 bytes

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