Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6c2abcc0c9ebcdd…

MALICIOUS

PDF

37.4 KB Created: 2021-06-13 23:53:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bdf044c760c1345e467f0791929ce791 SHA-1: 2f79c5b066dc754618e0146047bb71248598fa8d SHA-256: f6c2abcc0c9ebcdd399075e42bcc80c9eeb1e44d9d689b4727cd0034128566cf
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, including one directly advertised as a 'Roblox Free Builder Game Hack'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link-farming or redirection scheme. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent, likely leading to phishing or scam pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 3

  • 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.
  • 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.co/app/431946152/roblox-free-builder-game-hack
    • http://lib.bppsdmp.pertanian.go.id/main/repository/minecraft-that-you-can-play-for-free_GM479516143.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/minecraft-bedrock-hacks_GM479516143.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/coin-master-free-redeem-code_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/coin-master-cheat-to-get-free-spins_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/how-to-get-free-robux-on-chromebook_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/how-to-get-your-hacked-account-back-on-roblox-2021_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/free-uncopylocked-roblox-games-mega_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/free-boho-salon-roblox-application_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/pokemon-go-free-raid-pass_GM1094591345.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/how-to-get-items-on-roblox-for-free_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/coin-master-hack-version-download-2021_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/coin-master-link-app_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/robux-gift-card-free_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/free-coin-master-game_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/how-do-you-hack-roblox_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/freespinandcoin_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/multiplayer-master-hack-coins_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/get-robux-free-generator_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a4e.bin
31fc69870a5f3065ba62bff12342782bc120101d96bc87b2f323a703543d880c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A4E 23704 bytes

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