Malicious PDF — malware analysis report

Static analysis result for SHA-256 7913ca5b08096c6f…

MALICIOUS

PDF

45.7 KB Authoring application: pstoedit
MD5: 32d462f88cfa91b19330b6e675648b43 SHA-1: ea75c931e67473ee0c75f9ec4f0769ec18387db6 SHA-256: 7913ca5b08096c6f7f5df50d1899a9aeebd4afa38fa1b677a49f5b6a5e9c774d
150 Risk Score

Malware Insights

MITRE ATT&CK
T1204.001 User Execution: Malicious Link T1566.002 Phishing: Spearphishing Link

The sample is a small PDF containing a high volume of external links, which is a characteristic of an SEO link farm. The document body contains a lure related to 'My ambition essay in english pdf', which is used to attract search engine results. ClamAV has flagged this as Pdf.Phishing.TtraffRobotInstall, indicating a phishing campaign using automated traffic generation.

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://pcbaugh.com/uploads/1/3/0/2/130271013/pofuku_wubopedeluzuj_leganipabiwo.pdf
    • http://mycusina.com/uploads/1/3/0/6/130621307/318bcc4b4616.pdf
    • http://agelessfitness.net/uploads/1/3/0/6/130604687/41453e4f2a.pdf
    • http://pleaseexcusetheshirt.com/uploads/1/3/0/5/130550982/6921090.pdf
    • http://plumbingaltadena.net/uploads/1/3/0/6/130604606/dakusujopakikavob.pdf
    • http://asiabnpparibas.com/uploads/1/3/0/6/130603948/wesubazamu.pdf
    • https://lebajakemok.weebly.com/uploads/1/3/0/5/130588185/rubidepexeri.pdf
    • http://sofienbergbilvask.net/uploads/1/3/0/3/130312957/fisogegetitaxo.pdf
    • http://davidmarquesibanez.com/uploads/1/3/0/6/130620934/130620934.html#my+ambition+essay+in+english+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000138a.bin
4f922d3e6d8cf69e779af23c0d53128e19256f694a2bea9ffc8b73dcbdf1ab81		 pdf-font-stream PDF embedded font (sfnt) at offset 0x138A 8836 bytes

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