Malicious PDF — malware analysis report

Static analysis result for SHA-256 30526f596e7191e9…

MALICIOUS

PDF

47.2 KB Created: 2021-06-14 01:31:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1cab83954dfe44b2387cfd1bb11fe1a0 SHA-1: 71ee2d9ae76e4158c1da1af051ff9940fd96ccb3 SHA-256: 30526f596e7191e9db3abe57677c2607482502751fd24187f1f6f7d819b1ea4e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document contains a large number of external links, many of which are SEO-optimized and point to pages related to game hacks and free currency generators. The presence of a 'download button' heuristic and the ML classifier's high confidence score indicate a malicious intent to lure users to external sites. The document likely serves as a lure to download unwanted software or engage in phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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 http://netcdn.co/app/431946152/free-robux-generator-no-verification-no-survey-game-hack
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coin-master-free-spins-link-iphone_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coin-master-hack-pro-gamers_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-hack-without-downloading-apps_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-accessories-roblox_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coin-master-hack-apk-download-for-android_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-800-robux_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coinmaster-rewards_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-robux-no-verify-2021_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-robux-kid-friendly-no-human-verification_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/roblox-free-robux-codes_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/haktuts-coin-master-free-spin-link_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coin-master-free-spins-link-blogspot_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/hack-robux_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/microsoft-bing-free-robux_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-coins-coin-master-blog_GM406889139.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-robux-no-gift-card_GM431946152.pdf
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/como-hackear-coin-master-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004de2.bin
139bfb1f7c29c138bfff0c13775f0b82fd840165c8ff6667cb4dc7fe6a517c43		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DE2 25980 bytes
font_01_sfnt_off00008a8e.bin
e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8E 2852 bytes
font_02_sfnt_off0000944f.bin
cd12a2a2355e9b3bbb96cce50ee53d5a2d562d9e8db1323ee11a000dc303a368		 pdf-font-stream PDF embedded font (sfnt) at offset 0x944F 18892 bytes

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