Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb08b5eb53a2e67d…

MALICIOUS

PDF

23.4 KB Created: 2021-05-11 18:39:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a4ce15f6048704e71253f6da75b19224 SHA-1: 4466d07018998bede7dd50dda52927997fb651a5 SHA-256: cb08b5eb53a2e67d8837817f8c6dba73de6c02352cd3154a1c42d7555ae85415
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a "PDF_SEO_LINK_FARM" heuristic, pointing to various game-related hack and free spin pages. The primary URL, https://netcdn.xyz/app/406889139/coin-free-master-game-hack, is directly embedded and likely serves as the initial lure. While no scripts were explicitly extracted, the PDF structure and embedded link farm suggest a phishing or scam campaign designed to drive traffic to malicious or deceptive websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 3

  • 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.
  • 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/coin-free-master-game-hack
    • http://repository.poliven.ac.id/repository/coin-master-free-spins-2021-ios_GM406889139.pdf
    • http://repository.poliven.ac.id//repository/download-minecraft-free-hiapphere_GM479516143.pdf
    • http://repository.poliven.ac.id//repository/mcpe-master-coins-hack-download_GM406889139.pdf
    • http://repository.poliven.ac.id//repository/coin-master-free-spin-ml_GM406889139.pdf
    • http://repository.poliven.ac.id/repository/minecraft-free-edition_GM479516143.pdf
    • http://repository.poliven.ac.id/repository/coin-master-free-spin-link-new_GM406889139.pdf
    • http://repository.poliven.ac.id//repository/free-spins-coin-master-links-blogger_GM406889139.pdf
    • http://repository.poliven.ac.id/repository/coin-master-spin-pattern_GM406889139.pdf
    • http://repository.poliven.ac.id//repository/roblox-hack-game_GM431946152.pdf
    • http://repository.poliven.ac.id/repository/master-coin-hack-apk_GM406889139.pdf
    • http://repository.poliven.ac.id/repository/hack-xp-net-generators-coin-master_GM406889139.pdf
    • http://repository.poliven.ac.id/repository/how-to-play-coin-master_GM406889139.pdf
    • http://repository.poliven.ac.id//repository/earn-free-spins-for-coin-master_GM406889139.pdf
    • http://repository.poliven.ac.id//repository/is-there-any-way-to-get-free-robux_GM431946152.pdf
    • http://repository.poliven.ac.id//repository/roblox-generator_GM431946152.pdf
    • http://repository.poliven.ac.id//repository/coin-master-get-free-cards_GM406889139.pdf
    • http://repository.poliven.ac.id/repository/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdf
    • http://repository.poliven.ac.id/repository/free-robux-group_GM431946152.pdf
    • http://repository.poliven.ac.id//repository/need-free-spins-for-coin-master_GM406889139.pdf
    • http://repository.poliven.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000473f.bin
0d422af1986b47c6e3da3e6b57d91c8d55dea5da61c97c755383ba06697da4fc		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x473F 7856 bytes

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