Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ace3a8dcc280e66…

MALICIOUS

PDF

43.1 KB Created: 2021-05-12 06:01:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9f3dc12842a2dffdb8569215e452cf35 SHA-1: f6c9daf0a90c64a07114c5a3fe62071a90e02da7 SHA-256: 2ace3a8dcc280e6634df22b880899a6bd2e7bc424d0650163c92bd1d0d38af75
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains multiple links to external websites that promise game-related cheats and rewards, indicating a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of algorithmically generated URLs further supports this assessment. The document body, though partially corrupted, contains references to game hacks and a URL that aligns with the malicious heuristics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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/how-do-i-get-free-spins-in-coin-master-game-hack
    • http://stiepariperpus.web.id/sarjana/repository/robux-premium_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-free-spins-android_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana//repository/roblox-download-pc-free_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/roblox-april-fools-hack_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/mathep_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-cards-free_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/roblox-bux-free_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-in-app-purchase-hack_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/how-to-earn-free-robux_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/minecraft-pe-hack-client-2021_GM479516143.pdf
    • http://stiepariperpus.web.id/sarjana//repository/coin-master-fan-page-free-spins_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana//repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-free-spins-generator-no-verification_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana//repository/get-free-robux-gg_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana/repository/robux-com-free-robux_GM431946152.pdf
    • http://stiepariperpus.web.id/sarjana//repository/free-spins-on-coin-masters_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/free-spins-coin-master-app-ios_GM406889139.pdf
    • http://stiepariperpus.web.id/sarjana/repository/wizard-hacks_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e92.bin
58e0b0cd6877ffb5c7bff650ab82f85a8369908061bdc54ad76a84950178c31b		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E92 24812 bytes
font_01_sfnt_off00008663.bin
b027c2a021bab7014740c7b31d1151edd7292f7703eb7b510e8af7521ebdade3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8663 18216 bytes

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