Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7050aa5562c3b7f…

MALICIOUS

PDF

46.3 KB Created: 2021-05-13 11:43:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ac6796b4ab574aeed03a6f8c9b5fc27f SHA-1: 75d459563b74760b5af493bc4590d6ecd8c0b8cb SHA-256: f7050aa5562c3b7f1ecf7baf8a9ea1fd31fc8a84ae83916379dce070ef12ec9b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a document body that promotes free spins and coins for the game Coin Master, suggesting a lure for users to visit potentially malicious or scam websites. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, and the ML_NYX_PDF_MALICIOUS score further supports its malicious nature. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the content strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

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/coin-master-free-spins-and-coins-without-human-verification-game-hack
    • http://g3galileo.com/images/free-spin-link-in-coin-master_GM406889139.pdf
    • http://g3galileo.com/images/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdf
    • http://g3galileo.com/images/coin-master-hack-pro_GM406889139.pdf
    • http://g3galileo.com/images/coin-master-free-spin-trick_GM406889139.pdf
    • http://g3galileo.com/images/free-roblox_GM431946152.pdf
    • http://g3galileo.com/images/coin-master-hack-apk-app_GM406889139.pdf
    • http://g3galileo.com/images/spin-links-for-coin-master_GM406889139.pdf
    • http://g3galileo.com/images/haktuts-coin-master-spins_GM406889139.pdf
    • http://g3galileo.com/images/coinmaster-blogspot_GM406889139.pdf
    • http://g3galileo.com/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://g3galileo.com/images/coin-master-hacked-apk-download-for-android_GM406889139.pdf
    • http://g3galileo.com/images/coin-master-free-spins-link-2021_GM406889139.pdf
    • http://g3galileo.com/images/is-minecraft-free-on-xbox-one_GM479516143.pdf
    • http://g3galileo.com/images/free-spins-and-coins-for-coin-master_GM406889139.pdf
    • http://g3galileo.com/images/free-minecraft-account-and-password_GM479516143.pdf
    • http://g3galileo.com/images/robux_GM431946152.pdf
    • http://g3galileo.com/images/free-daily-coin-master-coins_GM406889139.pdf
    • http://g3galileo.com/images/best-free-spin-app-for-coin-master_GM406889139.pdf
    • http://g3galileo.com/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • http://g3galileo.com/images/free-robux-group-payouts_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cee.bin
7bc67fd32a893a2c37d68695e588b535596643bae100eb043abdb2b1790041e1
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CEE 25164 bytes
font_01_sfnt_off0000871b.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
pdf-font-stream PDF embedded font (sfnt) at offset 0x871B 2840 bytes
font_02_sfnt_off000090cd.bin
627a17dfb4ed3f06d3f31f70faa97a65df390d48f03df1dc3b4ba5da350fc24a
pdf-font-stream PDF embedded font (sfnt) at offset 0x90CD 18956 bytes