Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b1c8ff457249c27…

MALICIOUS

PDF

48.9 KB Created: 2021-05-14 05:08:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 291199da425f81ed4873391789bd977e SHA-1: ab3720c5f05f7605a9aa2ff99ca1611dfd0f49ac SHA-256: 0b1c8ff457249c27e46366593051767a0a304286aa46983bb08fb44984a081ff
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that lead to pages offering "hacks" or "free coins" for games, suggesting a phishing or scam attempt. The heuristic findings indicate a link farm structure designed to host many such lures. While no scripts were directly extracted, the presence of external URIs and the nature of the content strongly suggest a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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/431946152/hack-robux-game-hack
    • http://perpustakaan-stikesmsb.com/repository/free-coins-coin-master-link-today_GM406889139.pdf
    • http://perpustakaan-stikesmsb.com/repository/roblox-account-taker_GM431946152.pdf
    • http://perpustakaan-stikesmsb.com/repository/how-to-buy-robux-for-free_GM431946152.pdf
    • http://perpustakaan-stikesmsb.com/repository/how-to-get-free-robux-games_GM431946152.pdf
    • http://perpustakaan-stikesmsb.com/repository/can-i-have-robux_GM431946152.pdf
    • http://perpustakaan-stikesmsb.com/repository/free-coins-coin-master-today_GM406889139.pdf
    • http://perpustakaan-stikesmsb.com/repository/coin-master-free-spins-ios-app_GM406889139.pdf
    • http://perpustakaan-stikesmsb.com/repository/coin-master-hack-tool-v1-9-download-free-pc_GM406889139.pdf
    • http://perpustakaan-stikesmsb.com/repository/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdf
    • http://perpustakaan-stikesmsb.com/repository/how-to-get-free-roebucks-on-roblox_GM431946152.pdf
    • http://perpustakaan-stikesmsb.com/repository/free-roblox-accounts-with-robux-2021_GM431946152.pdf
    • http://perpustakaan-stikesmsb.com/repository/original-roblox_GM431946152.pdf
    • http://perpustakaan-stikesmsb.com/repository/roblox-hack-site_GM431946152.pdf
    • http://perpustakaan-stikesmsb.com/repository/free-spins-coin-master-2021_GM406889139.pdf
    • http://perpustakaan-stikesmsb.com/repository/minecraft-wurst-hacked-client_GM479516143.pdf
    • http://perpustakaan-stikesmsb.com/repository/minecraft-client_GM479516143.pdf
    • http://perpustakaan-stikesmsb.com/repository/free-spin-coin-master-link-2021_GM406889139.pdf
    • http://perpustakaan-stikesmsb.com/repository/optifine-pe_GM479516143.pdf
    • http://perpustakaan-stikesmsb.com/repository/twitter-coin-master-free-spins_GM406889139.pdf
    • http://perpustakaan-stikesmsb.com/repository/coin-master-hacks-for-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ad4.bin
b5cce7550ad1e147fd66626764a48243304f0992a2af0e85ff6e6af1531747e7		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD4 27928 bytes
font_01_sfnt_off00008b04.bin
a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B04 7448 bytes
font_02_sfnt_off00009ce7.bin
9805bb7d0eadd4beaac6fd3b5d5d8b6e8e5d33c97ce909732e364f826719e5d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CE7 18248 bytes

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