Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceed13094b43ffa5…

MALICIOUS

PDF

44.2 KB Created: 2021-06-03 09:39:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ef0022734317d428b646a74318cd6437 SHA-1: 4324941cf27a4b3bc2da86e980805fb0c4e86d49 SHA-256: ceed13094b43ffa543148c4cc08c8b92feb38a22cf550e529c4a032909c4e628
102 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which are structured as a link farm, suggesting an attempt to drive traffic to malicious sites. One URL, 'https://netcdn.online/app/479516143/wurst-112-game-hack', is directly linked to a potential download. The presence of a 'download button' heuristic further supports the malicious intent of luring users to external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/479516143/wurst-112-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/mcpe_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-coins-and-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-2021-hack_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roebucks-com_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/pokemon-go-free-yanma_GM1094591345.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-games-to-play-for-free_GM479516143.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
stream_004_off000050e8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50E8 25592 bytes
SHA-256: 07c183e51c128db4bccaeba39e20ad0740e647a9a9fce4e5911ea9aa8f39597b
font_01_sfnt_off00008ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA3 17788 bytes
SHA-256: ce3f60beb4de00bcffae905034889af3c96f4f191e5c47ffd96b019a9d508339

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