Malicious PDF — malware analysis report

Static analysis result for SHA-256 647c9babec94fea1…

MALICIOUS

PDF

34.7 KB Authoring application: OpenOffice.org
MD5: a41f8c6c89f613e981fed3e79906ab8b SHA-1: 8a5ea0be0c504e6d7e346b59d692cb468196c37f SHA-256: 647c9babec94fea1b1661b62d14528cb4a4dc8839f212b66ca23065fc0c69c50
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, which is indicative of a link farm or redirection tactic. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a phishing or malicious redirection intent. The embedded URLs are likely used to lead the user to malicious websites or download further payloads.

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://mrsmeltabargersclass.com/uploads/1/3/0/5/130539325/gawikinoruf.pdf
    • https://luganorafitato.weebly.com/uploads/1/3/0/6/130603814/merotim_watemul_nefif.pdf
    • http://cbdcreamonline.com/uploads/1/3/0/2/130274301/reloli-guwaked-rukevake-bolefadij.pdf
    • http://petspadogtrainer911.com/uploads/1/3/0/4/130491752/eeb3b17.pdf
    • http://mojaveoffroadadventures.com/uploads/1/3/0/4/130483191/pejapejub.pdf
    • https://wumibareve.weebly.com/uploads/1/3/0/5/130588333/33499.pdf
    • http://kreativekidsworld.com/uploads/1/3/0/5/130590673/130590673.html#lake+arrowhead+fishing+report+texas

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010dd.bin
7b38080f7d2227ed174bc2157baf7492c8abde643aba9102e9ca2145861f2baf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD 7696 bytes

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