Malicious PDF — malware analysis report

Static analysis result for SHA-256 c542cc8141f33a2b…

MALICIOUS

PDF

45.2 KB Created: 2021-06-04 04:09:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0e2fbc4110151ca0044b6cea2372646c SHA-1: 21b02b3528d01f4c68a83734318d41fb1bb263ea SHA-256: c542cc8141f33a2bc90bc52a3d82a91bd86361d41dd8af610a9fd7ae04b07af8
102 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to websites that promise game cheats and hacks. The document body, though partially corrupted, also contains a URL related to 'Coin Master' game hacks. This suggests a social engineering attack aimed at tricking users into visiting malicious sites, likely for malware distribution or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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/406889139/how-to-get-free-pet-food-on-coin-master-game-hack
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-card-collection-hack-2021_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/hack-coin-master-apk-download_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-claim-spins_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-generator-2021-no-survey_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-free-spin-and-trading_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-generator-no-survey_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-cheats-and-hacks_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-collect-today-free-spin_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/how-to-get-free-cards-in-coin-master_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/get-free-robux-no-survey-or-human-verification_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/blogspot-coin-master-spins_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-hack-app-android_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/how-to-get-free-spins-in-coin-master_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/coin-master-hack-android-2021_GM406889139.pdf
    • https://digilib.stikesindramayu.ac.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdf
    • https://digilib.stikesindramayu.ac.id/repository/how-to-hack-roblox-games_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005519.bin
d4e131194c8de69dc13b19e4e83984f4d94dd1a6da065b0b3ded649eb593a707		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5519 24808 bytes
font_01_sfnt_off00008e74.bin
ff82f51d7232829588729013e130c6bedc3d39e4fe745f7f2d9ded29e0868acc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E74 18200 bytes

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