Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dd4618efd01a2bf…

MALICIOUS

PDF

42.5 KB Created: 2021-05-19 22:34:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2279d37ac9ad466b5a08fe6ab260f85f SHA-1: 77ea372124cfed4d31a5bf9c357d1fc2a66ac450 SHA-256: 1dd4618efd01a2bf0fcc2e590ffd6da8e66bc1408ac501a34726ae319b5e93a5
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document contains numerous embedded URLs and a lure related to 'Coin Master Free Spins', strongly suggesting a phishing or scam attempt. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document may also attempt to trick users into revealing sensitive recovery information. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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-2021-ios-game-hack
    • http://algierimasonry.com/images/coin-master-free-shield-link_GM406889139.pdf
    • http://algierimasonry.com/images/free-robux-survey_GM431946152.pdf
    • http://algierimasonry.com/images/how-to-get-free-robux-gift-cards_GM431946152.pdf
    • http://algierimasonry.com/images/coin-master-free-spin-27_GM406889139.pdf
    • http://algierimasonry.com/images/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdf
    • http://algierimasonry.com/images/how-to-get-free-robux-without-offers_GM431946152.pdf
    • http://algierimasonry.com/images/blogspot-coin-master-free-spins_GM406889139.pdf
    • http://algierimasonry.com/images/coin-master-hack-version-download-2021-ios_GM406889139.pdf
    • http://algierimasonry.com/images/minecraft-skins-download-free_GM479516143.pdf
    • http://algierimasonry.com/images/coin-master-on-facebook_GM406889139.pdf
    • http://algierimasonry.com/images/coin-master-daily-link_GM406889139.pdf
    • http://algierimasonry.com/images/collect-free-spin-linms-coin-master_GM406889139.pdf
    • http://algierimasonry.com/images/free-robux-exe_GM431946152.pdf
    • http://algierimasonry.com/images/minecraft-wurst_GM479516143.pdf
    • http://algierimasonry.com/images/coin-master-free-spins-and-coins-group_GM406889139.pdf
    • http://algierimasonry.com/images/coin-master-free-coins-today_GM406889139.pdf
    • http://algierimasonry.com/images/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://algierimasonry.com/images/oprewards-login_GM431946152.pdf
    • http://algierimasonry.com/images/free-roblox-gift-card_GM431946152.pdf
    • http://algierimasonry.com/images/roblox-robux-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004958.bin
53f92f0c5be94f5c186c897e2fd38683a93d6977ded58874c32698f37fd51590		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4958 25824 bytes
font_01_sfnt_off000083a2.bin
09aa2f2ae7c5a995dc44b8644eea5b06d8fda2724c1331629896e56f28692ab2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83A2 18288 bytes

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