Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed664c7d57da9d99…

MALICIOUS

PDF

37.8 KB Authoring application: Karbon First seen: 2020-09-24
MD5: 299d3f5aec9584e8fca238133c74cf76 SHA-1: 6c124a03cfbc7d1388ac49292cc24a391b2bdf35 SHA-256: ed664c7d57da9d99d692ea4cc45b36d74d347d8e407c0366421a0f67de9fce81
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique identified by the PDF_SEO_LINK_FARM heuristic. ClamAV also detected this file as Pdf.Phishing.TtraffRobotInstall-7605656-0. The embedded URLs are likely used to redirect users to malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://pwrbit.net/uploads/1/3/0/4/130483303/sakewelekitir.pdf In PDF document text
    • http://nantucketshoresestates.net/uploads/1/3/0/5/130588951/jijogoluzadimuvuz.pdfIn PDF document text
    • http://myfineswine.com/uploads/1/3/0/5/130551765/0e9a58.pdfIn PDF document text
    • http://oakridgestables.co.uk/uploads/1/3/0/2/130272369/1431830.pdfIn PDF document text
    • http://lilayogashala.com/uploads/1/3/0/2/130272260/rigilerexekobulepud.pdfIn PDF document text
    • http://mbanerds.net/uploads/1/3/0/5/130588798/9905160.pdfIn PDF document text
    • http://arcadiagardensllclandscapinganddesign.com/uploads/1/3/0/4/130488512/130488512.html#philly+weather+reportIn 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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000120f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120F 8508 bytes
SHA-256: f4522e928e8e7d6f5a4f837853e618e7dcec1542207f607020c90c2ba4e5f701
font_01_sfnt_off000043d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43D6 2652 bytes
SHA-256: e91619dfd4c72a85464d95ef1ba4e67df13020651c42071bafbe521a61d9f7fc
font_02_sfnt_off00004ca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CA4 16060 bytes
SHA-256: 6ddf53b883350c964210757953e72edacca849803b95280767352c6c691d264d

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