Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb380394d826a6e6…

MALICIOUS

PDF

39.6 KB Authoring application: Poppler-utils
MD5: 0e2d2dfb886ebbe78f9efd51cc27636f SHA-1: 1b8d3056b5803e84e744cd2bfb683df1c17ebee5 SHA-256: bb380394d826a6e65aa2ce7754b8186156d08c44001dedf5905660b35e331f15
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection attempt. ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious classification. The embedded URLs are likely used to direct users to phishing or malware distribution sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://youngisraelnmb.org/uploads/1/3/0/6/130639540/2854681.pdf
    • http://buy-consoles.com/uploads/1/3/0/5/130588490/22ec7b638706e0d.pdf
    • http://berlinerbibelschulen.weebly.com/uploads/1/3/0/5/130540926/negikolal-kegipemewe-vutijuroteri.pdf
    • http://mosquitomaster.net/uploads/1/3/0/4/130491001/dexokuzaxoduzu.pdf
    • http://justicecollaborativeatcornell.com/uploads/1/3/0/2/130287505/2270185.pdf
    • http://bucketsofbrassandcopper.com/uploads/1/3/0/4/130488121/1875669.pdf
    • http://northernrailleaders.com/uploads/1/3/0/5/130539652/130539652.html#h%C3%A9lio+creder+instala%C3%A7%C3%B5es+hidr%C3%A1ulicas

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000123b.bin
57b3ea26c6f1ce75105eb7de5af645d38c904cbad8c9716e2153eb8fb6d0874e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x123B 11488 bytes
font_01_sfnt_off00005f61.bin
08705ce4a40e69214c33c60a4ae60f202220ad42e80e667896345fd8c365bbe4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F61 2824 bytes

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