Malicious PDF — malware analysis report

Static analysis result for SHA-256 0efa49c0755089a5…

MALICIOUS

PDF

42.4 KB Created: 2020-09-17 02:53:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1fb30ee6ac51cd9f809c2dd67c470a17 SHA-1: 44a0c2ff2f873662d401e534a07f5d6ed92c3113 SHA-256: 0efa49c0755089a5e36f9e19bb52527467befab556e69f1c00bb6d39b1ac6128
154 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including one pointing to a known malicious redirector at 'ttraff.club'. The document body, though heavily obfuscated, contains a URL that appears to be part of this link farm. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution.

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.club/wix?keyword=risk+the+science+and+politics+of+fear+pdf
    • http://files.equineecogreenus.com/uploads/1/3/1/8/131856860/4888660.pdf
    • http://files.benigoldendoodles.com/uploads/1/3/1/4/131407944/lorunuxejajonuvujuxe.pdf
    • http://files.tabersafehaven.ca/uploads/1/3/2/6/132696214/wekojosasupeti_nonawupemulawa_jonijokap.pdf
    • http://nometovi.elirakuka.com/uploads/1/3/1/6/131636627/3643134.pdf
    • http://kezowuji.melissalamoureuxlmft.com/uploads/1/3/1/4/131453872/bb8f3ac3152.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://b039dead-8567-45a0-8aec-70dab8893574.filesusr.com/ugd/5926b4_e4c13e3262eb43c1881c5600303092a2.pdf?index=true
    • https://34d4586d-196a-479f-930d-059b1e92ee8d.filesusr.com/ugd/5de1df_10b759f3069747719c56940c66acecd7.pdf?index=true
    • https://765fcc6c-4489-4a40-89cf-63dc0ae48a29.filesusr.com/ugd/e49726_79885d5306b04e66aaa43bccd0ced7e1.pdf?index=true
    • https://11aa9124-8177-4a94-94c3-8411ca526a06.filesusr.com/ugd/18574e_21eefa817b274ffbbecdd4fa3986e017.pdf?index=true
    • https://1a068b3d-0def-492f-8108-a593fbac1533.filesusr.com/ugd/234f58_74b2a23993c04e719e6598b03d6ee98b.pdf?index=true
    • https://4d98f55a-ef5d-412b-8fdc-45ffd6217e0b.filesusr.com/ugd/fac845_92234d9f5a19429b852f7a540454c407.pdf?index=true
    • https://20120a57-2a62-482b-be06-7b36e1052243.filesusr.com/ugd/dcf9ad_0fb1c4a972a04f6b9250bc83a6794383.pdf?index=true
    • 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_off00006524.bin
0d9edec6de4c69785f6e2a575ffbf4a1358ceb87597c1a492092152143531c14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6524 5316 bytes
font_01_sfnt_off00007736.bin
68da60717199c32f48583c48d22ed6bd7169adeb1a60eeb75c025bfa4e39daf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7736 11228 bytes

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