Malicious PDF — malware analysis report

Static analysis result for SHA-256 69dc642562bdaee9…

MALICIOUS

PDF

119.5 KB Created: 2020-09-16 21:42:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f25c540aab8f5181c76d2ca3093fdc4 SHA-1: d3ebeb7dbe98f3c71d6c42e140940b99dccad022 SHA-256: 69dc642562bdaee949cb91029af3989d55e85693a05deecc3b537c890abf5640
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically identified as a malicious redirector. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it's part of a link farm. The embedded URL `https://ttraff.cc/wix?keyword=peasant%2527s+quest+pillars` is likely used to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/wix?keyword=peasant%2527s+quest+pillars
    • http://files.nanaimoclippersmerch.com/uploads/1/3/0/7/130775806/zolojofit-vaxad-najopawo-falewazagus.pdf
    • http://wegepa.johnsonhoopbuildings.com/uploads/1/3/1/1/131164093/a98a1fbf5640c.pdf
    • http://files.navy101.com/uploads/1/3/0/8/130814115/foragutagaj-buvusifi-jolonurudibirar.pdf
    • http://jusosu.beautifulbloomer.com/uploads/1/3/1/6/131606056/nedudixebu.pdf
    • http://files.brunelscorner.com/uploads/1/3/2/7/132741194/5150314.pdf
    • http://files.wyreforestantiques.com/uploads/1/3/0/7/130775231/sosal.pdf
    • http://zevel.bluchip.org/uploads/1/3/1/4/131453784/b90ce.pdf
    • http://lipebev.goodnesstogocatering.com/uploads/1/3/1/3/131398455/7301333.pdf
    • http://files.youreyesonlyesthetics.com/uploads/1/3/2/6/132681634/0981dbd.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0448/4546/5762/files/you_the_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0468/0427/1253/files/xafikamojerufubotinawoge.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000190ed.bin
c1661338365e58302a4e6dec0b6554e8a2e1faa16ccff2b9619e72fc6a3234b7
pdf-font-stream PDF embedded font (sfnt) at offset 0x190ED 4972 bytes
font_01_sfnt_off0001a1ed.bin
dfa117d7825aa3003e1483664a9edd7dcaf1177df97c03b411daaa31bc07ca2f
pdf-font-stream PDF embedded font (sfnt) at offset 0x1A1ED 14932 bytes