Malicious PDF — malware analysis report

Static analysis result for SHA-256 1412f834324b12dc…

MALICIOUS

PDF

32.7 KB Created: 2021-07-04 08:25:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 64770db6a90ae6fc6fa2b149558400e2 SHA-1: 1ec84712a206fed40d58241e19a1b807d5abc2af SHA-256: 1412f834324b12dc813a05b952866533e9ab6cf7f4f68737307725cf8b3ce679
102 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which are structured as SEO link farms. The document body and extracted URLs suggest a lure for game cheats and hacks, indicating a phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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/479516143/minecraft-account-hacked-game-hack
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-hack-ios-no-verification_GM406889139.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/how-to-get-robux-for-free-2021-on-phone_GM431946152.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/lazyblocks-com-free-robux_GM431946152.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/minecraft-xbox-one-edition-digital-code-free_GM479516143.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/how-to-get-free-roblox-gift-cards_GM431946152.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/minecraft-rtx-download-free_GM479516143.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-free-coins-and-spins-2021_GM406889139.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/tiktok-free-views_GM835599320.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/how-to-actually-get-free-robux_GM431946152.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/free-spin-coin-master-iphone_GM406889139.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/how-to-get-robux-on-roblox_GM431946152.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/free-robux-websites-2021_GM431946152.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/roblox-generator-no-human-verification_GM431946152.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/coin-master-link-spin_GM406889139.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/wurst-112_GM479516143.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/wurst-hacks_GM479516143.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/archery-master-3d-coins-hack_GM406889139.pdf
    • http://himalayandiscoverytrek.com/userfiles/files/roblox-robux-hack-reddit_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002db9.bin
ff68416fd3dcd23affb4caff818c6c04594f94b879b2ad559cd6ad606e71efa2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DB9 21408 bytes
font_01_sfnt_off00005c68.bin
5dd05c9cb448aa3988e40803526fd1466b4ff4df0b75d5f1fead4c9123013b57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C68 18484 bytes

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