Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f1bbbeee38f6926…

MALICIOUS

PDF

41.3 KB Created: 2020-09-16 17:49:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 74b5357e9820c4068bf000729f9a3f80 SHA-1: 728508788c5449024d591315151d8312095465dc SHA-256: 4f1bbbeee38f69261604e07974427e7028a4d09515b5823e1643b3ff616937fa
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.club/wix?keyword=before+we+were+yours+pdf+online', is flagged as a malicious redirector. This suggests the document's primary purpose is to direct users to malicious infrastructure, likely for phishing or malware distribution. No scripts were extracted, limiting the analysis of direct execution capabilities.

Heuristics 3

  • 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.
  • 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=before+we+were+yours+pdf+online
    • http://files.alwaysgetbetterstronger.com/uploads/1/3/1/4/131437295/fopurigiki_femad_vizep_nurikolatuvirok.pdf
    • http://files.emdreiling.com/uploads/1/3/1/1/131164198/bujosexebopuxumi.pdf
    • https://8270c65a-9bdf-4155-b18a-acb58c271e91.filesusr.com/ugd/665c20_7f8b1db6395e42a49351024df1d19b79.pdf?index=true
    • https://9e1d5619-d6b6-4375-86d6-8a9c18a8703c.filesusr.com/ugd/35c6e2_3790b3ad52ff4f62874d5a7485d70db3.pdf?index=true
    • https://7f9588e7-0c22-42be-a49e-e4bb7de34a7b.filesusr.com/ugd/7f614e_46320258bd1f4f3fa78f8f91a111fce9.pdf?index=true
    • https://7b26a2e7-bd44-4ff1-86b4-a9fb34fd8628.filesusr.com/ugd/26481d_9a5e245132f04630a57bb8684fbe4945.pdf?index=true
    • https://691b7cc2-c7e5-4af7-9ae8-95f664209ceb.filesusr.com/ugd/89064d_7c67132c7ee54f1491c8ea6a883c2e0c.pdf?index=true
    • https://5d564158-9874-4f66-8dd5-bb909ce7a13d.filesusr.com/ugd/77941b_e5d8c5253f6740608ef2521eece26be3.pdf?index=true
    • https://18c5ff57-493d-4673-be08-78199fed594b.filesusr.com/ugd/1cc777_1ddc26b47f634842878fa7bcac3643f0.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0433/4305/2953/files/patagonigimatiberakiw.pdf
    • https://cdn.shopify.com/s/files/1/0432/0316/6372/files/fortnite_chapter_2_week_3_challenges_guide.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006616.bin
198bf259a5c55f06a34ad3652ad08fa9095808a507b6c55a6886e5cdec044848		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6616 5068 bytes
font_01_sfnt_off00007782.bin
2741e769ca3f5bb6606d935fa3faab749149c2c9744be845451698b2b2b73ba2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7782 9776 bytes

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