Malicious PDF — malware analysis report

Static analysis result for SHA-256 05e1014b911ebf11…

MALICIOUS

PDF

46.9 KB Created: 2021-06-02 06:05:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e9228c516c2b5e730c0287fb4183df63 SHA-1: bb3733a7bdd738d9d1d0e9f5e8ab0520a5f11cc6 SHA-256: 05e1014b911ebf119a93ee78b68a72a023dece3ce8983d920e3191f266f16c09
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous external links, many of which are SEO-optimized and point to other PDF files, suggesting a link farm designed to lure users with promises of free games or hacks. The presence of a direct external URI to 'minecraft-windows-10-free-game-hack' and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a malicious document designed for user redirection and potential exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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/479516143/minecraft-windows-10-free-game-hack
    • http://artindex.pro/images/roblox-premium-free_GM431946152.pdf
    • http://artindex.pro/images/rbx-gg-free-robux_GM431946152.pdf
    • http://artindex.pro/images/coin-master-free-spin-app-2021_GM406889139.pdf
    • http://artindex.pro/images/how-to-get-free-cards-in-coin-master_GM406889139.pdf
    • http://artindex.pro/images/to-get-free-robux_GM431946152.pdf
    • http://artindex.pro/images/roblox-hack-me_GM431946152.pdf
    • http://artindex.pro/images/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdf
    • http://artindex.pro/images/free-robux-no-human-verify_GM431946152.pdf
    • http://artindex.pro/images/coin-master-hack-apk-download_GM406889139.pdf
    • http://artindex.pro/images/free-minecraft-printables-food-labels_GM479516143.pdf
    • http://artindex.pro/images/hack-spin-coin-master_GM406889139.pdf
    • http://artindex.pro/images/free-minecraft-mods-for-pc_GM479516143.pdf
    • http://artindex.pro/images/coin-master-free-coins-link_GM406889139.pdf
    • http://artindex.pro/images/how-to-get-free-roblox_GM431946152.pdf
    • http://artindex.pro/images/how-to-get-minecraft-bedrock-for-free_GM479516143.pdf
    • http://artindex.pro/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdf
    • http://artindex.pro/images/blogspot-coin-master-free-spins_GM406889139.pdf
    • http://artindex.pro/images/hacks-for-roblox-prison-life_GM431946152.pdf
    • http://artindex.pro/images/com-roblox_GM431946152.pdf
    • http://artindex.pro/images/how-to-get-free-pet-food-in-coin-master_GM406889139.pdf
    • https://youtu
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005004.bin
609522404ccf36c1984456255b79761977cdbc0a2e1e8b24377f4c199dc7707a
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5004 25740 bytes
font_01_sfnt_off00008a0e.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0E 2840 bytes
font_02_sfnt_off000093c0.bin
61f4e129dbb086a6f9797ef369c55cdd3b58d633037fca8f4f59eaf5785788a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x93C0 18524 bytes