Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e61496801e9bb6e…

MALICIOUS

PDF

45.9 KB Created: 2021-05-19 17:52:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bd5e6f8f008f8883d5c68ac0cf103852 SHA-1: 633ad406b2ee389e60aa55e755fe96d8d0e58a88 SHA-256: 8e61496801e9bb6e5e37e0ae256972c65f347375d7971453e9638ad7db70a0e0
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external resources related to game cheats and hacks. The primary URL, https://netcdn.xyz/app/431946152/roblox-g-game-hack, suggests a lure for game exploits. The heuristic PDF_SEO_LINK_FARM indicates a mass of external links, likely intended to drive traffic to malicious or scam-related content. Although no scripts were explicitly extracted, the presence of embedded URIs and the nature of the links suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/roblox-g-game-hack
    • http://www.alpaca-buitensport.nl/images/free-promo-codes-for-robux_GM431946152.pdf
    • http://www.alpaca-buitensport.nl/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdf
    • http://www.alpaca-buitensport.nl/images/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdf
    • http://www.alpaca-buitensport.nl/images/lastrick-com-coin-master-hack_GM406889139.pdf
    • http://www.alpaca-buitensport.nl/images/roblox-c9m_GM431946152.pdf
    • http://www.alpaca-buitensport.nl/images/rbxdemon_GM431946152.pdf
    • http://www.alpaca-buitensport.nl/images/coin-master-heaven-free-spins-today_GM406889139.pdf
    • http://www.alpaca-buitensport.nl/images/free-daily-spin-coin-master-game_GM406889139.pdf
    • http://www.alpaca-buitensport.nl/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdf
    • http://www.alpaca-buitensport.nl/images/hack-coin-pro-coin-master_GM406889139.pdf
    • http://www.alpaca-buitensport.nl/images/free-minecraft-svg-cutting-files_GM479516143.pdf
    • http://www.alpaca-buitensport.nl/images/minecraft-cheats-switch_GM479516143.pdf
    • http://www.alpaca-buitensport.nl/images/free-robux-on-ipad_GM431946152.pdf
    • http://www.alpaca-buitensport.nl/images/how-to-get-free-robux-hack_GM431946152.pdf
    • http://www.alpaca-buitensport.nl/images/coin-master-free-spins-link-today-new_GM406889139.pdf
    • http://www.alpaca-buitensport.nl/images/chisel-and-bits-mod-minecraft-pe_GM479516143.pdf
    • http://www.alpaca-buitensport.nl/images/minecraft-hacks-wurst_GM479516143.pdf
    • http://www.alpaca-buitensport.nl/images/wizard-hacks_GM479516143.pdf
    • http://www.alpaca-buitensport.nl/images/minecraft-realms-free-trial_GM479516143.pdf
    • http://www.alpaca-buitensport.nl/images/minecraft-free-online-unblocked_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004986.bin
17a28e8a1f39058b255ef1c1d7c559de16542bc05993fb6c9f2ee8af9770dce2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4986 25836 bytes
font_01_sfnt_off000085e2.bin
40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85E2 3884 bytes
font_02_sfnt_off00009289.bin
4bd2d0041dee7b7796a1d14ead449b1e4ac2afb962c20115eab39ba9eb76df9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9289 17784 bytes

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