Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7c9eae2e5b6cca8…

MALICIOUS

PDF

46.6 KB Created: 2021-06-03 09:01:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c0d3f3b0ef08ddaba157a71855a0786b SHA-1: 7a104303fbe26e736e706db8e3d1947ef69e017c SHA-256: b7c9eae2e5b6cca8d502f4080f8370cfa4b3df584e19add638c67b2154220ede
102 Risk Score

Malware Insights

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

This PDF document contains numerous embedded links, forming a link farm, and a prominent external URI pointing to a "coin-master-online-hack-game-hack" download. The presence of a "SE_DOWNLOAD_BUTTON" heuristic further suggests a lure to download malicious content. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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/coin-master-online-hack-game-hack
    • http://muslib.unmus.ac.id//repository/coin-master-332-apk-free-download_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdf
    • http://muslib.unmus.ac.id//repository/how-do-i-get-minecraft-for-free_GM479516143.pdf
    • http://muslib.unmus.ac.id/repository/how-to-get-free-robux-for-real_GM431946152.pdf
    • http://muslib.unmus.ac.id/repository/claim-coin-master-free-spins_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/coin-master-free-spins-that-really_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/coin-master-fan-page-free-spins_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/free-vip-roblox_GM431946152.pdf
    • http://muslib.unmus.ac.id/repository/coin-master-hack-spin-generator_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/20-free-spins-coin-master_GM406889139.pdf
    • http://muslib.unmus.ac.id//repository/how-you-get-free-robux_GM431946152.pdf
    • http://muslib.unmus.ac.id/repository/get-roebucks-com_GM431946152.pdf
    • http://muslib.unmus.ac.id//repository/free-coins-and-spins-coin-master_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/coin-master-game-hack-kaise-kare_GM406889139.pdf
    • http://muslib.unmus.ac.id//repository/gameoffice-net-hack-coin-master_GM406889139.pdf
    • http://muslib.unmus.ac.id/repository/free-spin-sites-for-coin-master_GM406889139.pdf
    • http://muslib.unmus.ac.id//repository/robloxfun-com-generator_GM431946152.pdf
    • http://muslib.unmus.ac.id//repository/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdf
    • http://muslib.unmus.ac.id/repository/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdf
    • http://muslib.unmus.ac.id//repository/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004fb6.bin
8deba036ae2d642d47b65522e517063dc7bf56ab8942526cfc3e17adcc94ff9c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FB6 29276 bytes
font_01_sfnt_off00008ae1.bin
98478e2fbfabd582329b6206c0d46f67523cf5e299cb16118f1065b4dd5ec6a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE1 2896 bytes
font_02_sfnt_off000094c7.bin
dd7a4057587595e78019333ccc667320d6d804c022730983449509c018bf4689		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94C7 17788 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.