Malicious PDF — malware analysis report

Static analysis result for SHA-256 acc864aa97e91c6b…

MALICIOUS

PDF

67.7 KB Authoring application: Scribus
MD5: 0d3bd7967d8f57db72b89ae5c118c684 SHA-1: c000c023912f8db8f8ec42a1ab1623e6861465e8 SHA-256: acc864aa97e91c6b6815f172fa4727e5b52427b4bc422277a0dcb09f11c1ea96
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule indicating a large number of external links, and ClamAV detected it as Pdf.Phishing.TtraffRobotInstall-7605656-0. The embedded URLs, such as http://princess-swan.ru/uploads/2020/01/29/9831934.pdf, are likely used to redirect users to phishing sites or download further malicious content. The document body contains these URLs, reinforcing the lure mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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 http://princess-swan.ru/uploads/2020/01/29/9831934.pdf
    • http://newzealandcreativespacesstudioweebley.com/uploads/1/3/0/2/130289240/sidoxesozezej.pdf
    • http://kidscreativestudio.com/uploads/1/3/0/5/130590431/2210581.pdf
    • http://ndtasanantonio.org/uploads/1/3/0/5/130550743/130550743.html#hadees+about+namaz+in+arabic+with+urdu+translation

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000124f.bin
11a2d44ab8a8a2cd52f743bbe6b29301d8b75c32f9e62df5f87b911d03bd9027		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124F 8200 bytes
font_01_sfnt_off0000be9b.bin
1e71e115e8c49bfb3ce8c7e317cacf62b7dae35f646f2a8a15a347cb4c10f83e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE9B 18028 bytes

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