Malicious PDF — malware analysis report

Static analysis result for SHA-256 d29c89f7b532e38d…

MALICIOUS

PDF

43.6 KB Created: 2021-05-15 10:09:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 083c2746e68041c93e955d51570718d2 SHA-1: ca5c210c892b5a09e8f2ceece41759e042af7680 SHA-256: d29c89f7b532e38d133146ea404dadeba91b1c357932697bdb893ac98284703b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document acts as a lure, directing users to download potentially malicious content related to games like Minecraft and Roblox. The presence of a link farm with numerous SEO-optimized PDF lures, coupled with a direct link to a "hacked client" download, strongly suggests a malicious intent to distribute malware or unwanted software. The document leverages social engineering tactics by promising in-game currency or cheats.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-1.12-2-hacked-client-game-hack In PDF document text
    • https://alimi.com.tw/upload/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/get-me-free-robux_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/www-robux-us_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/get-robux_GM431946152.pdfIn PDF document text
    • https://alimi.com.tw/upload/files/hacked-roblox-accounts-list_GM431946152.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
stream_003_off00004abf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ABF 27388 bytes
SHA-256: a5b6402e5f93b909b15be3e1ab982d4854f112497edb21b992333989d8a5a674
font_01_sfnt_off00008836.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8836 18280 bytes
SHA-256: 82135226d76a6244ad3fef1c984a62d44c7236218efe4707925baddb6c5b4f8a

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