Malicious PDF — malware analysis report

Static analysis result for SHA-256 74dd9707f36c94a3…

MALICIOUS

PDF

37.6 KB Created: 2020-04-08 05:50:43 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 8bdba003bb943ce076f89124f6dc4ea5 SHA-1: b94f4b76e31e550734f55ebfc97e058e42bae256 SHA-256: 74dd9707f36c94a3ab1936fdaf655c6502c2cdfa162a21b6715e3c19b778ebb1
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body, though partially corrupted, contains a URL that appears to be a lure for educational content. The primary function of this file is to act as a link farm, directing users to potentially malicious external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://behave-aid.com/uploads/1/3/0/5/130589998/130589998.html#food+inc+movie+sheet+answer+key+quizlet
    • http://donnamalonescience.com/uploads/1/3/1/3/131379223/89d7c.pdf
    • http://azontee128boutique.net/uploads/1/3/0/9/130969090/terebivoronur.pdf
    • http://agbcbeechisland.org/uploads/1/3/1/4/131453858/tabogiparak.pdf
    • http://ravensroost610.org/uploads/1/3/0/2/130291499/junujivebavu.pdf
    • http://islandcool.org/uploads/1/3/0/5/130590658/nevipuwedozulaj.pdf
    • http://imaginationplayers.net/uploads/1/3/0/4/130483474/gejejorux_lisepaxosugupef.pdf
    • http://sextrafficla.com/uploads/1/3/0/2/130289475/nusiwobopobebon-dopatodad-radegebenak-xaranudovoti.pdf
    • http://tomisenamakeup.com/uploads/1/3/0/8/130814526/1361509.pdf
    • http://abundantfunding.us/uploads/1/3/0/5/130589409/fezajejemuwege.pdf
    • http://contentbyjulie.com/uploads/1/3/0/8/130813413/692111.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069c7.bin
a6040616e5f180b1fb1779aa549ea9fed337d3396aceded199cb90e2b1930e18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69C7 8172 bytes

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