Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ebf2d103cfb6963…

MALICIOUS

PDF

42.9 KB Created: 2021-05-15 16:20:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 08dca244687b0ac0faad1b489bfea5f8 SHA-1: 5e2658adf43adfeb7df0a90fba9bc424008820cd SHA-256: 9ebf2d103cfb6963b6e24f5287e60973a9d6cfd339adc03b1c95bb9f9d8a7c6e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a link farm, strongly suggesting it is designed to redirect users to malicious websites. The document body and extracted URLs indicate a lure for free game items and hacks, a common tactic for phishing or malware distribution. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-free-play-now-game-hack
    • http://www.bzconstructionservices.com/images/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdf
    • http://www.bzconstructionservices.com/images/how-to-hack-coin-master-facebook_GM406889139.pdf
    • http://www.bzconstructionservices.com/images/coin-master-free-cards-link-2021_GM406889139.pdf
    • http://www.bzconstructionservices.com/images/tower-of-hell-roblox-hack_GM431946152.pdf
    • http://www.bzconstructionservices.com/images/spin-free-coin-master_GM406889139.pdf
    • http://www.bzconstructionservices.com/images/coin-master-free-spins-cheat-deutsch_GM406889139.pdf
    • http://www.bzconstructionservices.com/images/how-to-hack-to-get-robux_GM431946152.pdf
    • http://www.bzconstructionservices.com/images/free-robux-no-human-verification-2021_GM431946152.pdf
    • http://www.bzconstructionservices.com/images/free-robux-codes-no-verification_GM431946152.pdf
    • http://www.bzconstructionservices.com/images/roblox-skins-boy-free_GM431946152.pdf
    • http://www.bzconstructionservices.com/images/roblox-adopt-me-hack_GM431946152.pdf
    • http://www.bzconstructionservices.com/images/hack-client_GM479516143.pdf
    • http://www.bzconstructionservices.com/images/is-minecraft-vr-free_GM479516143.pdf
    • http://www.bzconstructionservices.com/images/can-you-give-me-free-robux_GM431946152.pdf
    • http://www.bzconstructionservices.com/images/how-do-i-get-free-spins-in-coin-master_GM406889139.pdf
    • http://www.bzconstructionservices.com/images/25-free-spins-coin-master_GM406889139.pdf
    • http://www.bzconstructionservices.com/images/free-robux-clothes_GM431946152.pdf
    • http://www.bzconstructionservices.com/images/coin-master-heaven-free-spins_GM406889139.pdf
    • http://www.bzconstructionservices.com/images/how-to-get-minecraft-for-free-on-xbox-360_GM479516143.pdf
    • http://www.bzconstructionservices.com/images/how-to-get-free-minecoins-in-minecraft_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c13.bin
e6bfea0f58c7a479f307092b8e386780af9f89d72f23efcf2ef8f627b82ca6bf		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C13 25772 bytes
font_01_sfnt_off000085a8.bin
8fb035a18fc16afc6f4ff9a5e26a6abbde664002078e0241365ac52d9e0fb39c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85A8 18284 bytes

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