Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a0da42fc70cd1bd…

MALICIOUS

PDF

42.0 KB Authoring application: Nitro PDF
MD5: 3341ebba3900ae70b00324367b221a73 SHA-1: 4124e5b962bd09c6f5eaf79e512b0db599ad3d37 SHA-256: 6a0da42fc70cd1bd923e684f8c1ff7a4c7c56dcea58e0bf169fe44c818a4e2ae
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded external links, identified as a link farm, suggesting a phishing or redirection attempt. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output further support its malicious nature. No scripts were extracted, but the primary attack pattern involves directing users to numerous suspicious URLs.

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://herohomeassist.com/uploads/1/3/0/3/130313346/385765fb798d93.pdf
    • http://theultimatecruiser.com/uploads/1/3/0/2/130289551/lujefenezukibiw-sefim-rebujiji-giriwosig.pdf
    • http://crownwp.com/uploads/1/3/0/3/130379061/dalopusu_bimudelafix.pdf
    • http://25000morning.com/uploads/1/3/0/4/130435499/5845702.pdf
    • http://www.sleepyknightsblog.co.uk/uploads/1/3/0/8/130814058/7a487d855ff5a.pdf
    • http://www.al-jalal.com/uploads/1/3/0/8/130814718/kesuduliliraru.pdf
    • http://ciarawiegers.com/uploads/1/3/0/5/130545189/6f53a4ad51434.pdf
    • http://bbsolutions4u.com/uploads/1/3/0/3/130323717/sivoveg_muxunisotari_nidowewipabema.pdf
    • http://www.tiaisabella.com/uploads/1/3/0/5/130540286/09b32.pdf
    • http://avediflooring.com/uploads/1/3/0/5/130589220/0ea5fcb8ce0e0.pdf
    • http://www.gomobileconference.com/uploads/1/3/0/2/130291579/timenapajuzebi-wadaguwa-ligegidab-fivoxemogipus.pdf
    • http://www.atspeakup.com/uploads/1/3/0/7/130740013/5044633.pdf
    • http://ssmonogramsonline.com/uploads/1/3/0/4/130475939/1102834.pdf
    • http://beltwayig.com/uploads/1/3/0/5/130588452/8418625.pdf
    • http://zacharyares.com/uploads/1/3/0/4/130476276/d0a0b62.pdf
    • http://veggiebliss.com/uploads/1/3/0/6/130621460/sixofodo_mamubid.pdf
    • http://forecastcreative.com/uploads/1/3/0/4/130488338/228396.pdf
    • http://pinevilledui.com/uploads/1/3/0/7/130740573/8327651.pdf
    • http://autodiscover.digcitinstitute.com/uploads/1/3/0/6/130621460/130621460.html#ecosoc+resolution+on+gender+mainstreaming+2017

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000046cb.bin
97d1caa7f8faaf55bcabb405d3005229dda4b12b05a610d70d867c6d528c27a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x46CB 8012 bytes

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