Malicious PDF — malware analysis report

Static analysis result for SHA-256 335bc662e4bb0158…

MALICIOUS

PDF

46.5 KB Created: 2021-06-03 07:30:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2eac8ab333014694b6b408a3276bdad9 SHA-1: 5f1a00d8901cbb21dbe4acdfd00b273c73e49414 SHA-256: 335bc662e4bb015841664d76667c70b115aa2ee28771bd598cf2852c0b0d267e
82 Risk Score

Malware Insights

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

The document contains lures related to hacking online game accounts and includes multiple embedded URLs pointing to potentially malicious PDF files. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a payment redirection lure suggests a potential financial scam or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.online/app/431946152/how-to-hack-roblox-accounts-passwords-game-hack
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-robux-script_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/comapp-trekfree-coin-spindaily-link-master_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-robux-hack_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/minecraft-svg-images-free_GM479516143.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-hack-generator-tool_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-spins-and-coins-com_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/is-pokemon-go-free-on-iphone_GM1094591345.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/roblox-earn-robux_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-robux-generator-no-human-verification_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-spin-hack-coin-master-2021_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/2021-coin-master-hack_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-robux-hack-2021_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/coin-master-15-free-spin-link-today_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/free-spin-link-in-coin-master_GM406889139.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/minecraft-free-ios-2021_GM479516143.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/roblox-hacks-com_GM431946152.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/minecraft-bedrock-download-pc-free_GM479516143.pdf
    • http://www.weworkkuwait.com/uploaded_files/userfiles/files/roblox-play-as-guest-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005305.bin
87fc5d611584629d6fa9685f07aedd4c1670cdf34022a78b4e59ccd194040c9b
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5305 26944 bytes
font_01_sfnt_off0000916c.bin
1a35cdd5966ddf5a07fa4c0cf1a4b7623ebf18d314e768fc1998c6779142cc7b
pdf-font-stream PDF embedded font (sfnt) at offset 0x916C 18916 bytes