Malicious PDF — malware analysis report

Static analysis result for SHA-256 3012bb384c7aa5da…

MALICIOUS

PDF

32.4 KB Created: 2021-07-03 20:46:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fcff0f6a32464e357cab48352a0a665c SHA-1: 093c43ba0009fbc230b67c8e4f789112963b4de3 SHA-256: 3012bb384c7aa5da5d6d6f46a146ebfd6ad0a82aefed330489d64aff90eae8a8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and text lures related to 'free coins' and 'hacks' for games like TikTok, Roblox, and Coin Master. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a link farm designed to redirect users to potentially malicious sites. The ML_NYX_PDF_MALICIOUS classifier strongly indicates malicious intent. While no scripts were explicitly extracted, the structure and content point towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/835599320/free-tiktok-coins-game-hack PDF link annotation
    • https://malungtreks.com/userfiles/files/roblox-hack-wideos_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/obby-games-on-roblox-free_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/is-minecraft-free_GM479516143.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/free-robux-2021-no-hack_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/medieval-hood-of-mystery-roblox-free_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/pubg-uc-new-redeem-code_GM1330123889.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-to-hack-and-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/roblox-cheat-engine-admin-commands-hack_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/tiny-tanks-cheats-roblox_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/roblox-hack-cheat-engine-65-robux_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/coin-master-free-spins-ios-app_GM406889139.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • https://malungtreks.com/userfiles/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2B 21304 bytes
SHA-256: 905a8ebb2c58173e70d3667ccbdbfabec8d2f1c389cc5904fee6e5a5dd0840d0
font_01_sfnt_off00005cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC7 17972 bytes
SHA-256: fcfbb39a4b44212e2e83dd056e0e3d1a7bdbc0b6b7e3536e733aaa92041c090a

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