Malicious PDF — malware analysis report

Static analysis result for SHA-256 56dd094e7b7dc87c…

MALICIOUS

PDF

52.8 KB Created: 2020-08-29 04:36:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 505291184dc3b965fe607b1cf40bdec1 SHA-1: 34d6233e5f93eb7d328b62861c4b486031e738f0 SHA-256: 56dd094e7b7dc87cd579ea7d1b2cf28ecb60e37bbafd21f7c35132413db86296
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm designed to manipulate SEO or redirect users. One of the primary links points to a known malicious redirector. While the document body is heavily obfuscated, the presence of these links strongly suggests a malicious intent, likely for SEO manipulation or as a lure to malicious sites.

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.com/wix?keyword=factor+de+resistencia
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/savaranimukuxebisugo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6993/9612/files/banoxibebexugatipofefuva.pdf
    • https://cdn.shopify.com/s/files/1/0433/9875/8557/files/46997608346.pdf
    • https://cdn.shopify.com/s/files/1/0462/5019/7146/files/bluestacks_pokemon_go_hack_apk.pdf
    • https://cdn.shopify.com/s/files/1/0433/7215/0947/files/sap_accounting_software.pdf
    • https://cdn.shopify.com/s/files/1/0434/1835/3815/files/nutupemadusugoseb.pdf
    • https://static.usrfiles.com/ugd/b8c837_a4e002446a084c3d89b6b51f2ee8b7d2.pdf
    • https://static.usrfiles.com/ugd/b8c837_3503e436e03d486db9ff2ef8d9ebfd65.pdf
    • https://static.usrfiles.com/ugd/b8c837_809096bc45d647aabe6144a7a1001dca.pdf
    • https://cdn.shopify.com/s/files/1/0435/4827/8935/files/85221856700.pdf
    • https://cdn.shopify.com/s/files/1/0431/0191/3244/files/iwsr_forecast_report.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e40.bin
3287c0c2c479b3857f9249dc48e17f2672153cc71647fb11e5dd18994f494011		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E40 4856 bytes
font_01_sfnt_off00006ebe.bin
67fd2722a3e52f9fc03d17eb96c622e225481254d05503d5eba7dc565904d68d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EBE 7184 bytes
font_02_sfnt_off00008239.bin
20c555284c5335adac324d1e29a62c73228c03e9e0c77a98a08574910bc23d90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8239 14832 bytes
font_03_sfnt_off0000affa.bin
35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAFFA 16036 bytes

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