PDF malware analysis — malicious · 1c1b1ef3cd70b3ae

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 10:47:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)

MD5: 0ae7dd90aa0953a1f37ad97afc0720db SHA-1: fc6c08861d29772fe21c02f373078a5fe7fc8aca SHA-256: 1c1b1ef3cd70b3ae09e66f18d1f260c08ec7e107bac82315c95e92e305b837b3

102 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to websites offering 'free Robux' or 'Coin Master hacks'. This suggests a social engineering tactic to direct users to potentially malicious sites. The PDF_SEO_LINK_FARM heuristic indicates a deliberate attempt to create a link farm, further supporting the malicious intent. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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/431946152/robux-best-game-hack
- http://ebook.itn.ac.id/repository/is-roblox-free-on-xbox_GM431946152.pdf
- http://ebook.itn.ac.id/repository/coin-master-hack-spin-generator_GM406889139.pdf
- http://ebook.itn.ac.id/repository/100-free-spins-for-coin-master_GM406889139.pdf
- http://ebook.itn.ac.id/repository/free-ways-to-get-robux_GM431946152.pdf
- http://ebook.itn.ac.id/repository/google-how-do-you-get-robux_GM431946152.pdf
- http://ebook.itn.ac.id/repository/download-minecraft-java-edition-free_GM479516143.pdf
- http://ebook.itn.ac.id/repository/coin-master-spin-link-2021_GM406889139.pdf
- http://ebook.itn.ac.id/repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdf
- http://ebook.itn.ac.id/repository/free-coin-master-coins_GM406889139.pdf
- http://ebook.itn.ac.id/repository/games-that-give-you-free-robux_GM431946152.pdf
- http://ebook.itn.ac.id/repository/coin-master-free-spins-link-app-download_GM406889139.pdf
- http://ebook.itn.ac.id/repository/free-robux-no-apps_GM431946152.pdf
- http://ebook.itn.ac.id/repository/free-robux-hack-no-human-verification-2021_GM431946152.pdf
- http://ebook.itn.ac.id/repository/roblox-free-robux-hack_GM431946152.pdf
- http://ebook.itn.ac.id/repository/get-free-robux-proof-2021_GM431946152.pdf
- http://ebook.itn.ac.id/repository/coin-master-spins-hack-iphone_GM406889139.pdf
- http://ebook.itn.ac.id/repository/minecraft-xbox-one-code-free_GM479516143.pdf
- http://ebook.itn.ac.id/repository/minecraft-redeem-code-free-2021_GM479516143.pdf
- http://ebook.itn.ac.id/repository/coin-master-unlimited-spin-link_GM406889139.pdf
- http://ebook.itn.ac.id/repository/coin-master-free-spin-link-new_GM406889139.pdf
- http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000308f.bin` `c42ece24b16a1ed217e9fd7dddede76a047afe50b415c35cfacb26e2479542c5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x308F	22580 bytes
`font_01_sfnt_off000062a3.bin` `a9b734e54817a22fdd46b6eae3133a45a9261a925f04c001672fe4083b6bbc72`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x62A3	18656 bytes

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