Malicious PDF — malware analysis report

Static analysis result for SHA-256 11cde49a2554b57a…

MALICIOUS

PDF

45.1 KB Created: 2021-05-12 05:04:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 77e9bdebf99632cdf25edfc018675108 SHA-1: 4b83f365c297f97638b03e87a5f019d13fb71c70 SHA-256: 11cde49a2554b57a7ccd01a596597d51d3ba102fc046c5c2e1f34a98c2b7ad42
102 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, identified as a "PDF_SEO_LINK_FARM" heuristic, pointing to websites offering "free spins" and "free Robux." The ML classifier also flagged this PDF as malicious with high confidence. The presence of a "Visual download / call-to-action button lure" heuristic further suggests an attempt to trick the user into clicking these malicious links, likely leading to a phishing site or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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.xyz/app/406889139/coin-master-free-spins-app-game-hack
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/free-unlimited-coin-master-400-spin-link_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/how-to-get-free-robux-by-playing-games_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/no-human-verification-coin-master-hack_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-robux-accounts_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/blox-world-free-robux_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-spin-coin-master-instagram_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/hack-free-spin-coin-master_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-free-spins-link-haktuts_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/how-to-get-free-robux-hack_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-free-spins-2021-generator_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/coin-master-hack-uk_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/free-robux-generator-2021-no-survey_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/minecraft-hack-client-18-9_GM479516143.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/roblox-hacked-com-2021_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/free-spins-coin-master-links-no-human-verification_GM406889139.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id//repository/make-your-own-minecraft-server-free_GM479516143.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/free-2021-robux_GM431946152.pdf
    • http://perpustakaan.poltekkespangkalpinang.ac.id/repository/coin-master-hack-2021-apk_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c27.bin
72595e9c4e6f5ebaf40bc14be548cfb777e6a42345cf14b7284839b18682c1f0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C27 24984 bytes
font_01_sfnt_off000084fc.bin
10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84FC 2880 bytes
font_02_sfnt_off00008ee7.bin
21af4872a04c62c178ac31651a333ecdcea5bb1ed4ceeeef1956d42e8fc37ea8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE7 17884 bytes

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