Malicious PDF — malware analysis report

Static analysis result for SHA-256 233a909f141141cd…

MALICIOUS

PDF

46.6 KB Created: 2021-05-13 13:53:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 04f40cd4ea7ffa6ed6273a88f3db5b58 SHA-1: 4710be8ecb4d149ed87cecee664bf4cd520fafe8 SHA-256: 233a909f141141cd3834bdf67798e8d43e6e1c17a9eb1b0c36d0dd46801fdfd0
162 Risk Score

Malware Insights

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

The document contains numerous embedded links and a primary URL pointing to a download for a 'Coin Master Hack'. The heuristic 'SE_SECRET_RECOVERY_LURE' indicates the document may also attempt to solicit sensitive information like private keys or passwords. The presence of a large number of external PDF links suggests a link farm designed to drive traffic to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/coin-master-hack-version-apk-download-game-hack PDF link annotation
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/how-to-change-your-username-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • http://xn--80adcduozbpo4eve.xn--p1ai/images/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e1c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E1C 25348 bytes
SHA-256: ced7f0b42404aab0fff0e058e6db72928b8f024c6554aedb784a347c231beff0
font_01_sfnt_off000088d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88D3 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00009285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9285 18608 bytes
SHA-256: 1dc11e7f68bd978fc0a92f78b05146ad1c6754ecfa484bd6206fefa9f56aad89

Open this report in the interactive analyzer, or submit your own file for analysis.