Malicious PDF — malware analysis report

Static analysis result for SHA-256 498d6fcdc8ce26c4…

MALICIOUS

PDF

55.0 KB Authoring application: Adobe PDF Library 9.0 First seen: 2020-09-24
MD5: cf409e7ce16d8ed246a7899a705e684c SHA-1: 848231ce9848ba0bd5867b6d2df0fa4518f431f3 SHA-256: 498d6fcdc8ce26c419228fbd26e811dd3bb9cf53dff4318362981deedf343785
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of embedded links to external PDF documents, as indicated by the PDF_SEO_LINK_FARM heuristic. The ClamAV detection and ML classifier also strongly suggest maliciousness, with ClamAV identifying it as 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. While no scripts were explicitly extracted, the structure and embedded URLs point towards a phishing or SEO spam campaign designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://onlinecreator.net/uploads/1/3/0/8/130814675/wipuxofibu.pdf In PDF document text
    • http://catching-nature.com/uploads/1/3/0/2/130289224/9840594.pdfIn PDF document text
    • http://mobilmarketing.ipues.com/uploads/1/3/0/6/130603740/wimuzarakonoz_dowelefemasipe_fevap.pdfIn PDF document text
    • http://movingmemorycompany.com/uploads/1/3/0/6/130620482/b7be4d.pdfIn PDF document text
    • http://eggerl.design/uploads/1/3/0/4/130488779/1506be.pdfIn PDF document text
    • http://assocgota.com/uploads/1/3/0/6/130639398/2937362.pdfIn PDF document text
    • http://www.chieftalentmentor.com/uploads/1/3/0/7/130739253/1915803.pdfIn PDF document text
    • http://stockwits.com/uploads/1/3/0/3/130312920/1db3fde25ad643.pdfIn PDF document text
    • http://www.hartvanhout.co.za/uploads/1/3/0/9/130969683/b898ce.pdfIn PDF document text
    • http://hostmaster.shaunslade.com/uploads/1/3/0/7/130775432/242980.pdfIn PDF document text
    • http://claudiafreepoint.com/uploads/1/3/0/6/130620637/ropikotepukoratarako.pdfIn PDF document text
    • http://lasiweijiasiyulechengdizhi.f18.ebkf.org/uploads/1/3/0/4/130476104/lowifi.pdfIn PDF document text
    • http://tasteofsudan.com/uploads/1/3/0/8/130814715/17a28.pdfIn PDF document text
    • http://mynkamorris.com/uploads/1/3/0/7/130739938/5525677.pdfIn PDF document text
    • http://webdisk.themodestshoptx.com/uploads/1/3/0/6/130605073/130605073.html#bakteri+vibrio+cholerae+pdfIn 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_off0000125b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125B 8112 bytes
SHA-256: 3216c50b6b92ea359541950ae6cbfe2d75a224f5c9f42b7464785dd09d74f416
font_01_sfnt_off00009599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9599 2652 bytes
SHA-256: 1b3f82cd74c5b6671cc0c0d4a6c7877b74bb57ca469b2a61ef541918e41af838

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