Malicious PDF — malware analysis report

Static analysis result for SHA-256 36d534a7ed68690c…

MALICIOUS

PDF

44.0 KB Created: 2021-05-16 07:04:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 88b2523985ec2d3ad1ed3c7a517ffd41 SHA-1: a65f7a443f64ba5623afa9b408e201e94230ecb2 SHA-256: 36d534a7ed68690c7e1bb1b9b7f0319b7d9af48f2a6d8ebb8be7693f2d8aaecc
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged by a machine learning classifier as malicious. It contains a large number of external links, many of which point to other PDF files, suggesting a link farm or redirection mechanism. The document body, though partially corrupted, contains text related to hacking and game exploits, and the presence of a 'download button' heuristic further supports a malicious intent to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/how-to-hack-roblox-accounts-2021-game-hack
    • https://amazingnepaljourney.com/userfiles/files/coin-master-spin-hack-app_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/roblox-free-item-codes_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/roblox-free-robux-generator_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/google-play-coin-master-free-spins_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/how-to-hack-to-get-robux_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/moonactive-free-spins_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/minecraft-pocket-edition-mods-for-free_GM479516143.pdf
    • https://amazingnepaljourney.com/userfiles/files/websites-that-give-free-robux_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/coin-master-free-spins-link-2021_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/coin-master-free-coins-and-spins-daily_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/minecraft-tools_GM479516143.pdf
    • https://amazingnepaljourney.com/userfiles/files/coin-master-daily-free-spins_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/free-robux-without-any-verification_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/robux-free-promo-codes_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/bloxpink-free-robux_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdf
    • https://amazingnepaljourney.com/userfiles/files/coin-master-hack-2021_GM406889139.pdf
    • https://amazingnepaljourney.com/userfiles/files/how-to-get-free-robux-instantly_GM431946152.pdf
    • https://amazingnepaljourney.com/userfiles/files/free-robux-websites-no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b3c.bin
eb87cd6d0b8ed4d86812a045defae32cb123dd7d4b3ff21ef8a6c75ee13cde1c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B3C 26400 bytes
font_01_sfnt_off0000875e.bin
91904dcb98687fcf58c7b52e545a9fbf658b3e4d1998331468638ebaf1d03505		 pdf-font-stream PDF embedded font (sfnt) at offset 0x875E 18992 bytes

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