Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5b429df10d51bf7…

MALICIOUS

PDF

29.0 KB Authoring application: OpenOffice.org
MD5: 314f9dd1bbecf057723c1db05e92148d SHA-1: 55c39ff00338e9bf8018307f20adc079b9983154 SHA-256: c5b429df10d51bf7350a878c8ba4fdc028e36a875e4dff5ac274033f7e8aae26
150 Risk Score

Malware Insights

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

The PDF contains a fake login prompt and a large number of embedded URLs pointing to other PDF files, indicating a link farm designed to distribute malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. The heuristic PDF_SEO_LINK_FARM specifically identifies the mass external PDF link farm as a critical finding.

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://salvosurfboards.com/uploads/1/3/0/3/130379517/xuremotulije.pdf
    • http://mta-sts.mail.rrmorrisgetbook.com/uploads/1/3/0/6/130639922/nokajanaluf.pdf
    • http://getfitplanetusa.com/uploads/1/3/0/7/130740000/xepositefuwowuzevimo.pdf
    • http://clarksenvironmental.com/uploads/1/3/0/5/130539235/2848459.pdf
    • http://scholasticachievementpartnershandbook.com/uploads/1/3/0/6/130605353/liferiwev.pdf
    • http://spikek9.com/uploads/1/3/0/5/130543025/mefiw_sikarinajijade_vajekajikidagu.pdf
    • http://joblanta.com/uploads/1/3/0/6/130603925/5710861.pdf
    • http://primabooks.bookpod.com.au/uploads/1/3/0/8/130813829/c05e253df5af.pdf
    • http://barringtonintegrativehealth.com/uploads/1/3/0/5/130544089/bodafise-menimegeradev.pdf
    • http://ednenterprisesllc.com/uploads/1/3/0/6/130620484/vavovedebadetoz_felamu_wivupujepiset.pdf
    • http://duanebombard.com/uploads/1/3/0/7/130740169/jogojedibepa-fakogivoju.pdf
    • http://henleynaturalburial.com/uploads/1/3/0/4/130488964/9239275.pdf
    • http://charmgurl.com/uploads/1/3/0/7/130775746/dujagisorab.pdf
    • http://74-123-78-90.mgwnet.com/uploads/1/3/0/2/130271077/130271077.html#dead+poets+society+movie+in+hindi+480p+download

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001a03.bin
2678673efb7e18326d32db9ad33cb7492c673bf6cd6a1aa9d5459d96a03529aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A03 7088 bytes

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