Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cb778f486a0fb7d…

MALICIOUS

PDF

54.5 KB Authoring application: Soda PDF
MD5: 24f8bebb64b0ea347e4b820cc5279f5d SHA-1: ba9b7084581a645a3c7a4271e69e3e959523aafe SHA-256: 3cb778f486a0fb7dad10d7cebadbe80e1793eb67f7de702475c0c1c6edcba7f2
152 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a machine learning classifier with a high confidence score. The heuristic PDF_SEO_LINK_FARM indicates the presence of a link farm pointing to multiple PDF files hosted on various domains. The document body, though partially corrupted, contains references to these URLs, suggesting a phishing or redirection attempt to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://milotheclown.com/uploads/1/3/0/4/130483322/wopofagim.pdf
    • http://teamkelp.com/uploads/1/3/0/4/130489044/wajutonizamaze.pdf
    • http://ncsocietyofengineers.com/uploads/1/3/0/6/130639775/notose.pdf
    • http://xeruxu.trasir.ru/uploads/2020/01/28/xerilinutu_zoxapajujizu_fegutuz.pdf
    • http://nicoleolsthoorn.com/uploads/1/3/0/4/130435884/votejimogiparalijapa.pdf
    • http://treeservicechulavista.com/uploads/1/3/0/2/130289319/7978656.pdf
    • http://remade.info/uploads/1/3/0/4/130488328/wowaxa.pdf
    • http://riversidecountyhistory.org/uploads/1/3/0/6/130621457/130621457.html#java+swing+jtable+disable+cell+editing

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001220.bin
d85a0a1b886220c4c3dadb5972973358c8109b13263e84f170e389a316fc9916		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1220 8840 bytes

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