Malicious PDF — malware analysis report

Static analysis result for SHA-256 b00fa171d258a202…

MALICIOUS

PDF

27.2 KB Authoring application: PDF Studio
MD5: 6f22275c82d657934f9ec215d99cf2cd SHA-1: ceeefd2cee7dd1767214406e3478d8fde6f8bbd0 SHA-256: b00fa171d258a2025c2d7317e784e25a0575b81083c5b8bcf00a2e0858e67fa8
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged for containing a large number of external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic-driving intent. The embedded URLs point to various domains, suggesting a distributed infrastructure for this campaign.

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://xapa.russtin.com/uploads/2020/01/28/136240.pdf
    • http://wuxufij.klubok-modno.ru/uploads/2020/01/28/8968952.pdf
    • http://thedynamic8.com/uploads/1/3/0/2/130288761/9b6861e32e31c5.pdf
    • http://zabibo.galaxycom.ru/uploads/2020/01/27/7448369.pdf
    • https://manupezali.weebly.com/uploads/1/3/0/3/130313173/404fe032733.pdf
    • http://wikadefa.studio-elephant.ru/uploads/2020/01/28/zedaw.pdf
    • http://pianomethod.info/uploads/1/3/0/6/130605229/130605229.html#ejercicios+de+plc+resueltos+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000105c.bin
ff9ff097ae9826cb89f1935c413c55092d4286a0a322134e0291527c9296e0a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105C 7620 bytes

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