Malicious PDF — malware analysis report

Static analysis result for SHA-256 15165355b8668331…

MALICIOUS

PDF

42.3 KB Created: 2021-05-13 17:40:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0e59b300f51c5b6b97168730d8571198 SHA-1: 92493833cae00aa1eae8141e7d6f3f1312247701 SHA-256: 15165355b8668331f182f3784e87e941636fa0edd7da92cc46555e58f7de75da
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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-cheat-codes-free-game-hack PDF link annotation
    • http://www.imperialaccountingfl.com/images/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/coin-master-daily-free-spins-link-today-twitter_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/whats-robux_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://www.imperialaccountingfl.com/images/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048e8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48E8 26224 bytes
SHA-256: b4caf7e4e02461715007be197cc46dbfbc145679e4b8d8891da08f9250d050e6
font_01_sfnt_off000083d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D8 18052 bytes
SHA-256: e1f7dc216c669c22560805cc0a50cb8b77f141bfe6c38f33d25df223dbe053b5

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