Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5ded27ed30f4e81…

MALICIOUS

PDF

39.5 KB Created: 2021-05-20 18:33:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 8fabaf3d8a7e2da53298154b5bb7d878 SHA-1: c97be009fbcc20e8aa6e32ff1a202b99f9d6547b SHA-256: e5ded27ed30f4e81d5d5aa91e7567c4bc27e3da7f7054dcb575aa9f8b9dbdb9e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1190 Exploit Public-Facing Application

The document contains a lure for free in-game currency, specifically mentioning TikTok coins, and includes multiple links to external websites that likely host malicious content or phishing pages. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to potentially harmful sites for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

Heuristics 4

  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/835599320/how-to-get-tiktok-coins-for-free-game-hack PDF link annotation
    • http://sbm-nn.ru/images/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/wurst_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032be.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32BE 29040 bytes
SHA-256: 80fe9390fe4bec70fa0a64bd8336985937f742ba84039b12860a00ceaca6455a
font_01_sfnt_off000070c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70C5 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00007ad5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD5 17620 bytes
SHA-256: de0ea260d02d5f937bc0e6eeffc837cee134d4180daa43f7fa190d79e0b9fa8e

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