Malicious PDF — malware analysis report

Static analysis result for SHA-256 03234b9a82b766e0…

MALICIOUS

PDF

42.5 KB Created: 2021-05-17 15:36:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 25bd9cb7dffd2b41833a1186defc697d SHA-1: df3ab6faecfc2544f73c5cc4d9d07564cc8c5ddf SHA-256: 03234b9a82b766e0b470e00b080a1cb5809b29927acffebf7e67ccad5ba252ea
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, including one pointing to 'give-me-robux-now-game-hack'. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, suggesting a link farm designed to redirect users to potentially malicious content. The ML classifier also strongly flagged this PDF as malicious. The document body and embedded links suggest a lure for game-related cheats or hacks, which is a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/give-me-robux-now-game-hack
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/coin-master-free-chest-link_GM406889139.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/coin-game_GM406889139.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/how-to-get-free-robux-for-real_GM431946152.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/today-coin-master-free-coins-link_GM406889139.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-robux-no-verification-required_GM431946152.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/hack-version-of-coin-master_GM406889139.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/coin-master-free-spins-link_GM406889139.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/coin-master-100-spin-slot_GM406889139.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021_GM431946152.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-spins-for-coin-master-app_GM406889139.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-roblox-shirts-templates_GM431946152.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/coin-master-time-hack_GM406889139.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-spin-hack-coin-master-2021_GM406889139.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-bling-bling-card-coin-master_GM406889139.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/coin-master-hack-no-survey-or-verification_GM406889139.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/robux-generator-that-works_GM431946152.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/coin-master-game-for-pc-free-download_GM406889139.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/free-robux-download_GM431946152.pdf
    • https://www.medlinerecruitment.com/uploaded_files/userfiles/files/roblox-bloxburg-free-money_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049f2.bin
4791e2127d9239d12a28089106d484e19cccf9c4f077b9e3fc7ebff373e6515d		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49F2 24720 bytes
font_01_sfnt_off00008316.bin
da387504e4ee90144f6399ec13e2f6eb5be90933d390e8f78ca10c807e4b036a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8316 18444 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.