Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ef09505b2dd3122…

MALICIOUS

PDF

34.0 KB Created: 2021-06-28 17:47:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7ab22d362bf09258e4342c597f9a9b0f SHA-1: a17fa45f2b67b7eb8ff09c9f6f1737af1a19b0dc SHA-256: 9ef09505b2dd31227660ede0d98eeaaea53bd178802f1348c81278ef7829516f
102 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which are presented as download opportunities for game hacks and cheats, indicating a lure for users to obtain unauthorized software. The presence of a large number of external links, coupled with a machine learning model flagging the PDF as malicious, strongly suggests a malicious intent to redirect users to potentially harmful content. The document body, though partially corrupted, contains references to game hacks and URLs, reinforcing the phishing or malware distribution attempt.

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.co/app/431946152/hmm-roblox-hacks-game-hack
    • http://elibrary.smknesbu.sch.id/repository/games-that-can-give-you-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-tell-if-your-roblox-account-got-hacked_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-obc-in-roblox-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-phantom-forces-all-guns-free_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-software_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/do-you-want-some-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-coins-coin-master-hack_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-daily-spin-free_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/free-minecraft-resource-packs_GM479516143.pdf
    • http://elibrary.smknesbu.sch.id/repository/is-roblox-being-hacked-right-now-2021_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/top-free-commands-in-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/noclip-hack-download-for-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/robux-com-free-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/get-free-roblox-hats_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/did-momo-hack-roblox_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/roblox-animation-maker-free_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/como-hackear-en-roblox-robux_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/how-to-get-free-robux-without-verification_GM431946152.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-hack-online-download_GM406889139.pdf
    • http://elibrary.smknesbu.sch.id/repository/coin-master-free-pet-food_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e9f.bin
98ee42ba2a9c872eaf65482f37a5294ebd3c511205fa5d21ed23210cf73b784d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E9F 22276 bytes
font_01_sfnt_off0000603a.bin
280c990d406671a47a6843760d618e4684dbabfc9effcb51dafb364d0de31c0c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x603A 18916 bytes

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