Malicious PDF — malware analysis report

Static analysis result for SHA-256 466f3a24d782ab3f…

MALICIOUS

PDF

39.6 KB Authoring application: OpenOffice.org
MD5: 0830e494621e525a39ae351a35fc4d45 SHA-1: d2b65fe68dd97554549c3b9ca1c1c739dce73518 SHA-256: 466f3a24d782ab3fee14140a6633b1f6f980134e01ff667238c48cdb44dd9305
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to other PDF files hosted on various domains. This pattern is indicative of a link farm or a distribution mechanism for further malicious content. The ClamAV detection and ML classifier strongly support a malicious classification. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://myschoodle.net/uploads/1/3/0/3/130313314/1768017.pdf
    • http://metzteaching.net/uploads/1/3/0/7/130776076/5122581.pdf
    • http://perfilelearning.net/uploads/1/3/0/2/130271148/bitukemanegumu_nuxitudunibujer_fefitod_fugomegavalubo.pdf
    • http://joemathewson.net/uploads/1/3/0/7/130775818/netigisol.pdf
    • http://alangelfand.com/uploads/1/3/0/2/130271019/linorave-jolaso-posav.pdf
    • http://mockingbird.coffee/uploads/1/3/0/4/130483912/9036067.pdf
    • http://desatascosgava.net/uploads/1/3/0/5/130589194/vesebub-golobimida.pdf
    • http://konrn.com/uploads/1/3/0/6/130639590/4fa4a878b.pdf
    • http://thesavagegentleman.com/uploads/1/3/0/4/130483862/1539094.pdf
    • http://srichinmoy.us/uploads/1/3/0/5/130543855/6258825.pdf
    • http://makemealtimefamilytime.net/uploads/1/3/0/6/130605203/270e23c1a.pdf
    • http://more2dance.com/uploads/1/3/0/4/130483118/0f981a8fc.pdf
    • http://chewoncakes.com/uploads/1/3/0/7/130776712/130776712.html#short+reading+comprehension+passages+for+grade+7

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000432c.bin
3fbda6fc25f4f638b6d126e8abe7c19e902d1bf0bc6f47bde077bf3cd68dd633
pdf-font-stream PDF embedded font (sfnt) at offset 0x432C 7940 bytes