Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa87a9ad1e212334…

MALICIOUS

PDF

41.4 KB Authoring application: pdf-parser
MD5: 69a32cb926fe435178c9dc38d43cfcb0 SHA-1: 61829f404cdce7efac97608373a6e50480dd5402 SHA-256: fa87a9ad1e212334d9564ef97be114174e78f0b077ac44c931a14a66c8200b3b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link

The PDF contains a large number of embedded external links, a technique often used for SEO poisoning or phishing campaigns. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection intent. No scripts were extracted from this sample, limiting the analysis of direct payload execution.

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://lilor.as-ru.ru/uploads/2020/01/28/powolo.pdf
    • http://sibujimer.levina.info/uploads/2020/01/28/mixorom.pdf
    • http://pcfencingcenter.com/uploads/1/3/0/4/130476505/lomerudukivo_nepip.pdf
    • http://northoakdesign.com/uploads/1/3/0/7/130775447/7287050.pdf
    • http://webuxe.flowito.com/uploads/2020/01/29/6029898.pdf
    • http://milindian.com/uploads/1/3/0/5/130590036/bufefeverazorupa.pdf
    • http://rehphotography.org/uploads/1/3/0/6/130620614/130620614.html#home+rental+contract+template

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000108d.bin
88ed1eef3ef19e0e6bc3e32ba619bfefc91e92e8a97ff70bcf6187f933ebeb78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x108D 7764 bytes

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