Malicious PDF — malware analysis report

Static analysis result for SHA-256 273f576767f31cd9…

MALICIOUS

PDF

35.9 KB Authoring application: Smallpdf Desktop
MD5: 9427f617077257d8dc47051c198cd0cb SHA-1: 6ca7de0f3d012183eadf114441b268be3c9cb6ab SHA-256: 273f576767f31cd907ac8c6a48fe30aeb033633408fbba9f857a585849cdcd79
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which points to a malicious link farm. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports the phishing and malicious redirection intent. The embedded URLs are likely used to redirect users to potentially malicious content or phishing sites.

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://rotulossantiago.com/uploads/1/3/0/4/130478210/puxogusekag.pdf
    • http://wellingtonyogawithpenina.com/uploads/1/3/0/3/130323526/nigerewolafeja.pdf
    • http://sawtoothmountaincider.com/uploads/1/3/0/6/130604386/7a2075692.pdf
    • http://mvhsphotography.com/uploads/1/3/0/2/130271142/kenidosemepamodolox.pdf
    • http://unidosporlaprofesion.com.ar/uploads/1/3/0/6/130639404/3436294.pdf
    • http://ortaklargrup.net/uploads/1/3/0/5/130545932/7702544.pdf
    • http://meshayla.com/uploads/1/3/0/5/130589413/130589413.html#infected+gum+flap+over+wisdom+tooth

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010e7.bin
3630f1d682138c882d311c567c29b440c7712d627d21f89e1157da0e16e3fc1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E7 7800 bytes

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