Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1c42e7ea94aecfa…

MALICIOUS

PDF

43.1 KB Created: 2021-05-13 04:02:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2a10ee0ce80366b1067976cdd5d3b4f8 SHA-1: 43b89c90aa581cafcbc9e94c177b48f2325d02f6 SHA-256: f1c42e7ea94aecfa8ac069b7f3423e43967bb7d6d216bffd566014c53557b038
102 Risk Score

Malware Insights

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

The document contains a lure for free game currency and hacks, directing users to download a file from a suspicious URL. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document may also attempt to phish for sensitive information like passwords or private keys. The ML classifier strongly flagged this PDF as malicious, suggesting it is designed to deliver a payload.

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/free-spins-coin-master-hack-2021-game-hack
    • http://kcr-rochlitz.de/images/how-do-i-get-free-coins-on-coin-master_GM406889139.pdf
    • http://kcr-rochlitz.de/images/free-spins-coins-coin-master_GM406889139.pdf
    • http://kcr-rochlitz.de/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://kcr-rochlitz.de/images/free-roblox-clothes_GM431946152.pdf
    • http://kcr-rochlitz.de/images/coin-master-hacks-2021_GM406889139.pdf
    • http://kcr-rochlitz.de/images/roblox-hack-unlimited-robux_GM431946152.pdf
    • http://kcr-rochlitz.de/images/coin-master-hack-fast-org_GM406889139.pdf
    • http://kcr-rochlitz.de/images/new-free-spins-coin-master_GM406889139.pdf
    • http://kcr-rochlitz.de/images/roblox-comcom_GM431946152.pdf
    • http://kcr-rochlitz.de/images/coin-master-hack-xyz-download-free_GM406889139.pdf
    • http://kcr-rochlitz.de/images/free-spins-coin-master-blogspot_GM406889139.pdf
    • http://kcr-rochlitz.de/images/free-unlimited-robux_GM431946152.pdf
    • http://kcr-rochlitz.de/images/free-robux-hack-no-verification_GM431946152.pdf
    • http://kcr-rochlitz.de/images/coin-master-free-coins-and-spins-app_GM406889139.pdf
    • http://kcr-rochlitz.de/images/www-roblox-com-robux-free_GM431946152.pdf
    • http://kcr-rochlitz.de/images/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • http://kcr-rochlitz.de/images/coin-master-free-2021-spin-link_GM406889139.pdf
    • http://kcr-rochlitz.de/images/free-robux-no-verify-2021_GM431946152.pdf
    • http://kcr-rochlitz.de/images/free-spin-link-coin-master-today_GM406889139.pdf
    • http://kcr-rochlitz.de/images/free-roblox-templates_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004793.bin
d76621bf1d7099f78aa04877a5b97a3ac4f7f42a8e63ec16207d44cfb0af255e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4793 29500 bytes
font_01_sfnt_off00008583.bin
8f74d6ddd2abce9f563610cbfcc253ce51c057807514da134dc64dcb58b7111e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8583 18456 bytes

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