Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b0ecc40eeb438f0…

MALICIOUS

PDF

37.8 KB Authoring application: PDF Studio
MD5: 151f7b42660ba5798657bec547b29982 SHA-1: f6144aab6323dca130609d873bcb06c2c85293ff SHA-256: 9b0ecc40eeb438f045bf7f8bf466d69784660af824f17cda16ea6504a9b06fc8
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as flagged by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV also strongly indicate maliciousness, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs are the primary IOCs, suggesting a phishing or content distribution attack.

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://relaysocial.net/uploads/1/3/0/7/130739980/fojesafejedose_vupoduzunajopo_xeletazi_mipitumasen.pdf
    • http://www.globaltechwomen.net/uploads/1/3/0/6/130639588/pofonuvavil_joleguser_sudaziwusupado.pdf
    • http://www.themorganthomas.com/uploads/1/3/0/6/130620673/1708319.pdf
    • http://cardinalswbb.net/uploads/1/3/0/7/130776743/766023.pdf
    • http://nubiangoatskentucky.com/uploads/1/3/0/6/130639845/6d29ba3.pdf
    • http://falconinvestigates.com/uploads/1/3/0/6/130640191/japilewanevivibaviwu.pdf
    • http://invasion-games.com/uploads/1/3/0/6/130640097/tosijiloguvibejiwaj.pdf
    • http://nwcamper.com/uploads/1/3/0/7/130775917/f09b4efb2c.pdf
    • http://hasbropowerrangers.com/uploads/1/3/0/8/130873923/julixazeze_bakebiwesu_zuxolugub.pdf
    • http://niwawriters.org/uploads/1/3/0/5/130590521/728585.pdf
    • http://cpanel.selindoalpha.com/uploads/1/3/0/2/130270951/992e3f.pdf
    • http://hostmaster.allcomersmusic.org/uploads/1/3/0/4/130493816/togogemesetuxuvupixe.pdf
    • http://domainthename.com/uploads/1/3/0/7/130739446/bc0446.pdf
    • http://devtest-international.com/uploads/1/3/0/2/130273931/130273931.html#ielts+general+reading+past+papers+with+answers

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dc1.bin
d907c570f1f8f2d62f38d7529dbf77de46ca3a1917ec53aca7a78bae59874b04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2DC1 2616 bytes
font_01_sfnt_off00003992.bin
97fb881bb206edc15f25d62cd3722a625d2da9711fa6bc7399bfae9351b5ac7c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3992 8300 bytes

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