Malicious PDF — malware analysis report

Static analysis result for SHA-256 f03dfc0ffac30627…

MALICIOUS

PDF

43.9 KB Created: 2021-06-03 14:27:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0908469f726f554e0c43914a3203ae7e SHA-1: 8a896b1b513eeac731b317f6b24f08cb4b46298e SHA-256: f03dfc0ffac306276b795280bc591fdda61ecb3399625e52f5509c776e8f9274
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links to websites offering 'free Robux' or 'free spins', presented as a lure for users. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, and the ML classifier strongly flagged this PDF as malicious. The document body and embedded links suggest a scam or phishing attempt to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/431946152/free-robux-websites-no-human-verification-game-hack
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-spins-twitter_GM406889139.pdf
    • http://abdinusababellibrary.ac.id//repository/free-rewards-coin-master_GM406889139.pdf
    • http://abdinusababellibrary.ac.id//repository/coin-master-pet-food-hack_GM406889139.pdf
    • http://abdinusababellibrary.ac.id//repository/roblox-free-robux-no-human-verification_GM431946152.pdf
    • http://abdinusababellibrary.ac.id//repository/roblox-e-free_GM431946152.pdf
    • http://abdinusababellibrary.ac.id//repository/how-to-get-free-roblox_GM431946152.pdf
    • http://abdinusababellibrary.ac.id//repository/free-spins-coin-master-apple_GM406889139.pdf
    • http://abdinusababellibrary.ac.id//repository/free-robux-without-any-verification_GM431946152.pdf
    • http://abdinusababellibrary.ac.id//repository/roblox-hack-ga_GM431946152.pdf
    • http://abdinusababellibrary.ac.id//repository/roblox-cp_GM431946152.pdf
    • http://abdinusababellibrary.ac.id//repository/how-can-u-get-free-robux_GM431946152.pdf
    • http://abdinusababellibrary.ac.id//repository/how-to-get-free-robux-not-a-scam_GM431946152.pdf
    • http://abdinusababellibrary.ac.id//repository/roblox-free-hair-codes_GM431946152.pdf
    • http://abdinusababellibrary.ac.id//repository/hack-coin-master-using-pc_GM406889139.pdf
    • http://abdinusababellibrary.ac.id//repository/play-minecraft-for-free-on-pc_GM479516143.pdf
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-coins-link-facebook_GM406889139.pdf
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-gold_GM406889139.pdf
    • http://abdinusababellibrary.ac.id//repository/free-robux-no-generator_GM431946152.pdf
    • http://abdinusababellibrary.ac.id//repository/can-u-get-free-robux_GM431946152.pdf
    • http://abdinusababellibrary.ac.id//repository/coin-master-reward-link_GM406889139.pdf
    • https://rblx.land
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004eaf.bin
3958251e5c60e0acfce7afa5d5563f6ca9b9315af4b01334cb42b9bad9d5ab90		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EAF 24308 bytes
font_01_sfnt_off0000866c.bin
b278ed256549c6e4f6c448dba943d0e72c7f64ebe7340c12334ea4705f26c648		 pdf-font-stream PDF embedded font (sfnt) at offset 0x866C 19056 bytes

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