Malicious PDF — malware analysis report

Static analysis result for SHA-256 94bb2b64b6903266…

MALICIOUS

PDF

57.0 KB Authoring application: LibreOffice Draw
MD5: bfc06ae8441660731178e0f104ba1ed1 SHA-1: 29e06b060493a59149c5e0fc51c4471a4194f336 SHA-256: 94bb2b64b69032665f97bdf32055f8d4867cfe250051181ca2a2ef7646675379
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files hosted on various domains. This behavior is indicative of a link farm designed to direct users to potentially malicious content. The ClamAV detection and ML classifier further support the malicious nature of this file, classifying it as phishing or a traffic redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://keyspirereviews.com/uploads/1/3/0/2/130272606/pedat-vukenit.pdf
    • http://consulting123.de/uploads/1/3/0/6/130639310/1856391.pdf
    • http://danielreist.org/uploads/1/3/0/7/130740199/koxuzekoruwura.pdf
    • http://nexcend.com/uploads/1/3/0/6/130605438/depuzemabakadujinudo.pdf
    • http://fromper.com/uploads/1/3/0/6/130621158/89af2344e3b.pdf
    • http://carpetcleancary.com/uploads/1/3/0/6/130639592/130639592.html#balakrishna+singer+st+dj+songs

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012a1.bin
57a45c588e108a753940516f4f4e603aed6a5093e2fadf9e8324138536acf1ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A1 8376 bytes

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