Malicious PDF — malware analysis report

Static analysis result for SHA-256 71a4b677f6d6651c…

MALICIOUS

PDF

37.2 KB Authoring application: Smallpdf Desktop
MD5: f4709b5feb307b06192a06625a0e81f8 SHA-1: fc05d174daddc2b20a5071d789ec66d33bd161df SHA-256: 71a4b677f6d6651cff8690266d7939b465e4b5e3ec2428fbc2b29e95057cf740
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. This suggests a malicious intent to manipulate search engine results or redirect users to potentially harmful websites. The ClamAV detection and ML classifier further support its malicious nature, classifying it as phishing-related malware.

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://hot100project.com/uploads/1/3/0/4/130436451/062c94.pdf
    • http://agingathometechnology.com/uploads/1/3/0/4/130476423/9620865.pdf
    • http://tapixal.easternbusinessdistrict.online/uploads/2020/01/29/10020b6469.pdf
    • http://kacihollingsworth.com/uploads/1/3/0/7/130739120/8568162.pdf
    • http://mrsnicolas.com/uploads/1/3/0/5/130543870/xapos_fujotapides_jefiwasikap.pdf
    • http://akashachamberlain.com/uploads/1/3/0/7/130739154/zuwinipujato.pdf
    • http://theaestheticskinstylist.com.au/uploads/1/3/0/5/130544734/jopuxuwobodepekubada.pdf
    • http://tcsonline.net/uploads/1/3/0/4/130483348/130483348.html#cisco+access+point+multiple+ssid+same+vlan

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001160.bin
2e3e7d438badd3ad253472c4eafbf94920cc86a5f58927df3d2382dcc3bd93d3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1160 7544 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.