Malicious PDF — malware analysis report

Static analysis result for SHA-256 78acb73c92742bef…

MALICIOUS

PDF

43.2 KB Created: 2021-05-15 06:18:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: abf927b313172ddf451f0a2db0c998fe SHA-1: 3b8f6ccb0a5295f9df74b3b9481113e7bdfb5977 SHA-256: 78acb73c92742befd6729a8faf8261eae52d949c7a2a999211cd0da21dd56d27
62 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and a call-to-action phrase, strongly suggesting a social engineering lure. The primary goal appears to be tricking the user into downloading a 'Roblox Account Hacker Tool' from the provided URLs. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/roblox-account-hacker-tool-game-hack
    • http://103.19.59.42/__statics/gudangsoal/files/www-rbx-com_GM431946152.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/free-spins-and-coins-for-coin-master_GM406889139.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/free-spins-coin-master_GM406889139.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/coinmaster-blogspot_GM406889139.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/coin-master-free-spins_GM406889139.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/google-how-do-you-get-robux_GM431946152.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/coin-master-free_GM406889139.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/coin-master-free-spin-and-coin_GM406889139.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/free-robux-codes-2021_GM431946152.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/coin-master-hack-ios-no-verification_GM406889139.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/coin-master-links-for-free-spins-2021_GM406889139.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/get-free-robux_GM431946152.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/how-to-get-100-robux-for-free_GM431946152.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/how-to-hack-and-get-free-robux_GM431946152.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/free-roblox-glasses_GM431946152.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/free-robux-com-2021_GM431946152.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/free-coin-master-app_GM406889139.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/coin-master-heaven-free-spins-today_GM406889139.pdf
    • http://103.19.59.42/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004872.bin
6720f0ad5cb08fc40ec462f64b464635a7e0c06ba52ce412e01e114408946159
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4872 26332 bytes
font_01_sfnt_off000085df.bin
be2d3c57b171ea36946098a74c5bbef6bd2a12406cdf89d7d5ae97ba7b22bd3c
pdf-font-stream PDF embedded font (sfnt) at offset 0x85DF 18428 bytes