Malicious PDF — malware analysis report

Static analysis result for SHA-256 c47ed202fc8caa54…

MALICIOUS

PDF

45.6 KB Created: 2021-05-11 15:12:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9754894a7bcce6c7d6aef926019e7d96 SHA-1: 74bf7396ffb6342cd98ef5a5a667c92d179e1b32 SHA-256: c47ed202fc8caa54992f9737365310aa36ea08608bf99370baef04590af9b8aa
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of external links, many of which are SEO-optimized and point to other PDF files, suggesting a link farm designed to attract users searching for game cheats or hacks. The primary URL, 'https://netcdn.xyz/app/406889139/mcpe-master-coins-hack-game-hack', is presented as a direct download for a game hack. The presence of a PDF URI heuristic and the ML classifier strongly indicate malicious intent, likely to drive traffic to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/mcpe-master-coins-hack-game-hack
    • https://www.kambati.co.za/images/javascript-free-robux_GM431946152.pdf
    • https://www.kambati.co.za/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdf
    • https://www.kambati.co.za/images/free-robux-cards_GM431946152.pdf
    • https://www.kambati.co.za/images/free-spin-coin-master-link-today_GM406889139.pdf
    • https://www.kambati.co.za/images/how-to-get-free-premium-roblox_GM431946152.pdf
    • https://www.kambati.co.za/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdf
    • https://www.kambati.co.za/images/blogspot-coin-master-spins_GM406889139.pdf
    • https://www.kambati.co.za/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdf
    • https://www.kambati.co.za/images/get-free-robux-without-doing-anything_GM431946152.pdf
    • https://www.kambati.co.za/images/free-spins-coin-master-links-2021_GM406889139.pdf
    • https://www.kambati.co.za/images/free-robux-giveaway_GM431946152.pdf
    • https://www.kambati.co.za/images/coin-master-hack-version-download-2021-ios_GM406889139.pdf
    • https://www.kambati.co.za/images/how-to-get-free-spins-on-coin-master_GM406889139.pdf
    • https://www.kambati.co.za/images/coin-master-free-spins-link-quora_GM406889139.pdf
    • https://www.kambati.co.za/images/how-to-get-free-robux-without-surveys_GM431946152.pdf
    • https://www.kambati.co.za/images/coin-master-mod-version-free-download-ios_GM406889139.pdf
    • https://www.kambati.co.za/images/coin-master-daily-rewards_GM406889139.pdf
    • https://www.kambati.co.za/images/coin-master-free-2021_GM406889139.pdf
    • https://www.kambati.co.za/images/free-coins-and-spins-for-coin-master-game_GM406889139.pdf
    • https://www.kambati.co.za/images/earn-free-spins-in-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cbc.bin
39af0dfe15ff240320255be84838e74f50a458efd09860fd2c5533d37b196725
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CBC 25252 bytes
font_01_sfnt_off000086a1.bin
03f8397bdf627aa5eb6acb233d3c5d547fa213245667a48a7f92829839117302
pdf-font-stream PDF embedded font (sfnt) at offset 0x86A1 2920 bytes
font_02_sfnt_off000090b9.bin
d01168f9bbbfe6455f8e766ddb511a9b706125e6492a8429ac9dad2f06419671
pdf-font-stream PDF embedded font (sfnt) at offset 0x90B9 17892 bytes