Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e5920bed619f52c…

MALICIOUS

PDF

60.5 KB Created: 2020-09-18 06:31:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7395da194377c51e5183435bc3ec9bca SHA-1: be11c1e95d7f49d59a5ba1e938663a559e66e38c SHA-256: 2e5920bed619f52c2e3ec7a50b26ddbcfa6b7b5ac80015c4e13348d550e5702e
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link 'https://ttraff.me/wix?keyword=i+wish+i+were+a+butterfly+poem' points to known malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests the document is part of a link farm, with 'http://files.meganpirrocco.com/uploads/1/3/0/9/130969751/1224451.pdf' being one of many such links. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, but the primary malicious intent appears to be the redirection via the embedded URL.

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.me/wix?keyword=i+wish+i+were+a+butterfly+poem
    • http://files.meganpirrocco.com/uploads/1/3/0/9/130969751/1224451.pdf
    • http://files.alexbaecher.com/uploads/1/3/2/7/132740763/gidip_tuvekajonotagor_vekurosifo_koxejowula.pdf
    • http://files.logcabinrental.ca/uploads/1/3/0/7/130738701/48ab9.pdf
    • https://b7d83541-9bf6-4264-862d-b23f7780cc63.filesusr.com/ugd/2dbf5a_ba4cc52245f840a1b9eb71d95cf080b4.pdf?index=true
    • https://692385d8-fc6f-4d1d-9771-b8ae4c6bc7df.filesusr.com/ugd/8ab72e_e9d6b40fbc2a4c9ca6fd86d55a566d41.pdf?index=true
    • https://7d3d9c8c-3fad-416d-9d9e-a327b4d5d064.filesusr.com/ugd/eb4c03_42960c0b0e294b6aa676f22a0d1c194c.pdf?index=true
    • https://4efa75c7-6447-4a70-9e2e-2f6b1b530074.filesusr.com/ugd/11baf9_921d8b4caa704f2e96b3cb7b4bf8acba.pdf?index=true
    • https://7e2608d0-98cc-4ada-96bf-be5c2bf1142b.filesusr.com/ugd/24d943_ad05b2bc6b864169b65fbebcb5ecf8c4.pdf?index=true
    • https://7d7aaedb-7ac1-4410-8a80-c9df2ac4e467.filesusr.com/ugd/c33cdb_78e31e79294f48ea9598ed5f0665d4d6.pdf?index=true
    • https://65631cb3-8a27-44f7-a5be-1720f97e4744.filesusr.com/ugd/48d9a1_c510f316177546709ad19d30bc44e10e.pdf?index=true
    • https://6b81303a-7d1a-4b83-96be-10a922426a58.filesusr.com/ugd/2072cd_afead9375ea94eeebc926c12e60a9a70.pdf?index=true
    • https://ee53f1a1-e397-468f-a88b-b1c9c97f6a1b.filesusr.com/ugd/95b9ea_2869ecaa29174365a629a7dc1b2e27b1.pdf?index=true
    • https://432f2cbc-7ee9-45f2-a451-7ae32e30b8a4.filesusr.com/ugd/1fbf8b_3710279b9184460da23c753207018f9f.pdf?index=true
    • https://9a1e1859-9c19-439b-951f-ea8ec36f698d.filesusr.com/ugd/007d40_ea3fa73b25334807ac25bf37b80a6039.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/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a648.bin
a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA648 2828 bytes
font_01_sfnt_off0000b042.bin
f05c97061b33811b7781bf03870fa3a5a50b60dc7d4900ef709626481065fad3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB042 5412 bytes
font_02_sfnt_off0000c296.bin
f69dc6798bcb48e5c3811f9cc66dfa2d3c8f2616d3e0215779d1ca13a7fd0f78		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC296 9984 bytes

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