Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b41b8258c592178…

MALICIOUS

PDF

46.9 KB Authoring application: PDFBox
MD5: 7bc6043e28ec996e394516dc5744b739 SHA-1: bc4099676263893b0f8d488f9057328d601df9c7 SHA-256: 2b41b8258c592178c58cc04f56fd793fec37b6c411aba9ec7831074e1d4502af
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or malicious redirection intent. The document body, though heavily obfuscated, contains references to URLs that are also listed as embedded URLs, suggesting a coordinated effort to direct users to external malicious content.

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://accordingtoiris.com/uploads/1/3/0/6/130621068/tigirexelo.pdf
    • http://mimedesignstudio.com/uploads/1/3/0/5/130550824/pakamaxu.pdf
    • http://charlidrawz.com/uploads/1/3/0/5/130588833/1df6df.pdf
    • http://manticarchitecture.com/uploads/1/3/0/2/130288629/vavere.pdf
    • http://aearthsport.com/uploads/1/3/0/4/130476065/0a12c4756edda5e.pdf
    • http://woodlandstuition.com/uploads/1/3/0/6/130639973/130639973.html#new+amharic+movies+fastmoon

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fe2.bin
ebc9eef2cbbfa2faf3a84d46e050ad6f243d982ab56fb6283cda7b03b0112b2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2 6992 bytes
font_01_sfnt_off00003d9c.bin
3f3d03157cde72d20883d7c0556d6896d643cc83062b7740735e3ea05d6844af		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3D9C 27860 bytes

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