Malicious PDF — malware analysis report

Static analysis result for SHA-256 32df2dffdb0db9c6…

MALICIOUS

PDF

42.4 KB Created: 2021-05-17 15:10:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 48acfb6632833be8c0bd7920b184e38a SHA-1: 528d46f163ee6818848e9a1248f209a9aa153bf1 SHA-256: 32df2dffdb0db9c63ca8781897ee653abf65bb27edb865777321a6328a4eecec
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 SEO-optimized and point to game-related cheat and hack content. The primary URL, https://netcdn.xyz/app/406889139/coinmaster-free-cards-game-hack, suggests a lure for users seeking in-game advantages. The presence of a 'download button' heuristic further supports the idea that the document is designed to trick users into clicking malicious links or downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/coinmaster-free-cards-game-hack
    • https://emindonesia.com/assets/CKImages/files/coin-master-free-spins-link-today-instagram_GM406889139.pdf
    • https://emindonesia.com/assets/CKImages/files/is-roblox-free-on-pc_GM431946152.pdf
    • https://emindonesia.com/assets/CKImages/files/robux-adder_GM431946152.pdf
    • https://emindonesia.com/assets/CKImages/files/free-cheat-codes-for-coin-master_GM406889139.pdf
    • https://emindonesia.com/assets/CKImages/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdf
    • https://emindonesia.com/assets/CKImages/files/how-to-get-hacks-on-minecraft_GM479516143.pdf
    • https://emindonesia.com/assets/CKImages/files/hacker-coin-master_GM406889139.pdf
    • https://emindonesia.com/assets/CKImages/files/hack-coin-master-apk-32-download_GM406889139.pdf
    • https://emindonesia.com/assets/CKImages/files/coin-master-free-spins-link-2021_GM406889139.pdf
    • https://emindonesia.com/assets/CKImages/files/how-to-get-free-coins-on-coin-master_GM406889139.pdf
    • https://emindonesia.com/assets/CKImages/files/free-roblox-script-executor_GM431946152.pdf
    • https://emindonesia.com/assets/CKImages/files/roblox-robux-hack_GM431946152.pdf
    • https://emindonesia.com/assets/CKImages/files/roblox-earn-robux_GM431946152.pdf
    • https://emindonesia.com/assets/CKImages/files/minecraft-114-4-download_GM479516143.pdf
    • https://emindonesia.com/assets/CKImages/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdf
    • https://emindonesia.com/assets/CKImages/files/instagram-coin-master-free-spins_GM406889139.pdf
    • https://emindonesia.com/assets/CKImages/files/get-free-robux-no-human-verification_GM431946152.pdf
    • https://emindonesia.com/assets/CKImages/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdf
    • https://emindonesia.com/assets/CKImages/files/roblox-hack-me-robux_GM431946152.pdf
    • https://emindonesia.com/assets/CKImages/files/coin-master-hack-without-verification_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b9a.bin
26e4c72f63e23d74aff85aecd13097af01883b381b98331e3ba2948d8e8c98da
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B9A 24472 bytes
font_01_sfnt_off000083e7.bin
4e9ac2dffccf12dc152d767ce3e4837f7e1c2082475e153b18622bd7e6b7030e
pdf-font-stream PDF embedded font (sfnt) at offset 0x83E7 18144 bytes