Malicious PDF — malware analysis report

Static analysis result for SHA-256 6887ee810f62b827…

MALICIOUS

PDF

47.5 KB Created: 2021-05-13 23:11:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e2ca1610a7618e087bc0886a3c31812f SHA-1: 577dbc6f15a87f4926efb5f56ef7e187e9c4a0d5 SHA-256: 6887ee810f62b827223520b57a5dca81055b61fa3f59a247543a4166aa37837a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs, identified as a link farm, all pointing to sites offering free game currency or hacks. The ML classifier also flagged this PDF as malicious. The presence of these links suggests a phishing or malware distribution attempt, likely initiated via a spearphishing attachment. No scripts were extracted, but the document body and heuristics indicate a lure for potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

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/406889139/free-coins-coin-master-spins-game-hack
    • https://www.lauresa.de/images/pig-master-free-coins-and-spins_GM406889139.pdf
    • https://www.lauresa.de/images/free-minecraft-windows-10-account_GM479516143.pdf
    • https://www.lauresa.de/images/can-i-download-minecraft-for-free_GM479516143.pdf
    • https://www.lauresa.de/images/free-robux-generator-without-verification_GM431946152.pdf
    • https://www.lauresa.de/images/coin-master-hack-online-cheat_GM406889139.pdf
    • https://www.lauresa.de/images/today-free-spin-coin-master_GM406889139.pdf
    • https://www.lauresa.de/images/how-do-i-get-free-spins-in-coin-master_GM406889139.pdf
    • https://www.lauresa.de/images/coin-master-date-and-time-hack_GM406889139.pdf
    • https://www.lauresa.de/images/free-links-for-coin-master-2021_GM406889139.pdf
    • https://www.lauresa.de/images/coin-master-free-spins-hack-link_GM406889139.pdf
    • https://www.lauresa.de/images/free-free-robux_GM431946152.pdf
    • https://www.lauresa.de/images/coin-master-unlimited-spin-apk-free-download_GM406889139.pdf
    • https://www.lauresa.de/images/daily-coin-master-link_GM406889139.pdf
    • https://www.lauresa.de/images/free-roblox-script-executor_GM431946152.pdf
    • https://www.lauresa.de/images/get-robux-for-free-2021_GM431946152.pdf
    • https://www.lauresa.de/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • https://www.lauresa.de/images/instagram-coin-master-free-spins_GM406889139.pdf
    • https://www.lauresa.de/images/free-robux-obby-2021_GM431946152.pdf
    • https://www.lauresa.de/images/roblox-hax_GM431946152.pdf
    • https://www.lauresa.de/images/daily-coin-master-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047e4.bin
68ea84257fd8beadb3fafd636dcb91e3ad0e4077f1eddadd03383deb8afc931c
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47E4 24596 bytes
font_01_sfnt_off00008023.bin
5f209d2de47fc1d1daa3f7a159899a6156681217a4da0d2c4432eb95998bf980
pdf-font-stream PDF embedded font (sfnt) at offset 0x8023 4092 bytes
font_02_sfnt_off00008dfb.bin
6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
pdf-font-stream PDF embedded font (sfnt) at offset 0x8DFB 2788 bytes
font_03_sfnt_off000097eb.bin
2acdf213e8e807bc487a80aadd43e8577e55ab076d243b65afc8816f4882cfa2
pdf-font-stream PDF embedded font (sfnt) at offset 0x97EB 17884 bytes