Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea3a10cb1ccf3ff7…

MALICIOUS

PDF

52.9 KB Authoring application: LibreOffice First seen: 2020-09-24
MD5: 65361669e8af6358c8ff99f1c9cb9343 SHA-1: 508b042adca260cec032030d3035078918d5bc21 SHA-256: ea3a10cb1ccf3ff7151ff3652664b4d8e15c6772e95eb3feaa25d320ad6152ad
152 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic. These URLs point to various external PDF files hosted on different domains. The ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0 further supports a malicious intent, likely related to phishing or traffic redirection. No scripts were extracted from this sample, limiting the ability to determine specific execution behaviors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 3

  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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.
  • 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://acceleratecleaning.com/uploads/1/3/0/6/130604187/2566783.pdf In PDF document text
    • http://exponentialtimes.tv/uploads/1/3/0/6/130620325/wetixodi_zezixuruza_nefat_niwiju.pdfIn PDF document text
    • http://notyetapparel.com/uploads/1/3/0/4/130483520/4256796.pdfIn PDF document text
    • http://dentalstudentportal.com/uploads/1/3/0/6/130639652/5e652bab1a.pdfIn PDF document text
    • http://nugriot.com/uploads/1/3/0/2/130291551/ziluse.pdfIn PDF document text
    • http://killjoy.info/uploads/1/3/0/6/130620800/zikediluriniga-tirifosok.pdfIn PDF document text
    • http://thefairbankagency.com/uploads/1/3/0/4/130483266/4e10192e845.pdfIn PDF document text
    • http://bizniznews.com/uploads/1/3/0/6/130639476/60cc1bcb.pdfIn PDF document text
    • http://knockaroundllc.com/uploads/1/3/0/7/130776889/sasabutojezid.pdfIn PDF document text
    • http://constructoraliverpool.com/uploads/1/3/0/5/130589410/3759541.pdfIn PDF document text
    • http://elder-well.net/uploads/1/3/0/3/130313488/c0180c4ed220283.pdfIn PDF document text
    • http://kylaconner.com/uploads/1/3/0/8/130814874/130814874.html#treatment+of+meningitis+wikiIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001326.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1326 9496 bytes
SHA-256: a272ba63c40333cd0d71e88b5f541567241db78b2eec4c11f9b70a48cabdfb95
font_01_sfnt_off00009483.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9483 2652 bytes
SHA-256: e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc

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