Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ceac571c6b02c7d…

MALICIOUS

PDF

43.9 KB Created: 2021-05-17 22:41:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 3f1e6682f003c3c82835d936e9ad1adf SHA-1: 45147d5cb77e36643af47ad653ff97ba3629339d SHA-256: 2ceac571c6b02c7d43dbd5a742132c872cb1891563a1e9dddb08c9ece3ea55e9
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains lures for free in-game currency and items, such as Robux and Coin Master spins, which is a common tactic for phishing or malware distribution. The presence of external URIs and embedded URLs pointing to potentially malicious domains strongly suggests a malicious intent. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/how-to-get-free-robux-website-game-hack
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/free-robux-no-verification-no-download_GM431946152.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/roblox-top_GM431946152.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/coin-master-free-coins-2021_GM406889139.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/coin-master-free-cards-link_GM406889139.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/free-coin-master-cheats_GM406889139.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/how-to-get-free-roblox-money_GM431946152.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/free-robux-just-enter-username_GM431946152.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/free-robux-no-verification-or-survey-2021_GM431946152.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/free-coin-master-spins-for-today_GM406889139.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/game-toolbox_GM479516143.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/roblox-army-free-robux_GM431946152.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/robux-gift-card-free_GM431946152.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/coin-master-free-spins-23-march-2021_GM406889139.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/coin-master-daily-free-cards_GM406889139.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/easy-way-to-get-free-robux_GM431946152.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/roblox-free-play_GM431946152.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/moonactive-coin-master-free-spins-link_GM406889139.pdf
    • https://surpetgarut-tmcollection.com/ckfinder/userfiles/files/hack-to-send-gold-cards-on-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049f6.bin
1793a8bdda9abb01fedef4187508dcdc9108de05de9431ef2ce86916fefc7f2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49F6 27628 bytes
font_01_sfnt_off00008817.bin
ac0d4502235c23175446595a7cf8e817a77a023a22f0524dfc344b6b051bbd29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8817 18600 bytes

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