Malicious PDF — malware analysis report

Static analysis result for SHA-256 d471d5183c023195…

MALICIOUS

PDF

46.4 KB Created: 2020-08-30 00:55:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e0ef4126d078b4b83e105ed198a5fa9 SHA-1: acba0980aadb9327fed26c46271136713ea5b9d8 SHA-256: d471d5183c023195709d0d5570bc34c3d098840d90e5a4e51448e0494259810b
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a known malicious redirector, ttraff.com. The document body, though heavily obfuscated, contains the URL that leads to the malicious redirector. This suggests the primary purpose is to redirect the user to a malicious site, likely for phishing or to download further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bruce+hood+the+self+illusion+pdf
    • https://static.usrf
    • https://cdn.shopify.com/s/files/1/0437/7939/1637/files/resawetetuzetifimesare.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/canon_printer_wifi_app_android.pdf
    • https://cdn.shopify.com/s/files/1/0432/7240/5157/files/lorenamowovefapolamafunok.pdf
    • https://cdn.shopify.com/s/files/1/0430/7809/0901/files/6528054946.pdf
    • https://cdn.shopify.com/s/files/1/0432/1230/8637/files/bipewibalukodumujoro.pdf
    • https://cdn.shopify.com/s/files/1/0429/1035/1513/files/entresto_patient_assistance_form.pdf
    • https://cdn.shopify.com/s/files/1/0440/4566/4406/files/basic_functions_in_excel.pdf
    • https://static.usrfiles.com/ugd/b8c837_f20c8a843dca4c0fb47fb30996a38280.pdf
    • https://static.usrfiles.com/ugd/a59130_f354427dd49f4aa9bc5119a9f57f8bd0.pdf
    • https://static.usrfiles.com/ugd/52b593_04625555b58342d28087ae3a3101208f.pdf
    • https://static.usrfiles.com/ugd/b8c837_0456f83b53964426a41325bac41d8f95.pdf
    • https://static.usrfiles.com/ugd/b8c837_53686dd539794b55860797b7d42ce3b6.pdf
    • https://static.usrfiles.com/ugd/6846fe_0636a0cd8e70477e9b7970273a0212e5.pdf
    • https://static.usrfiles.com/ugd/b8c837_47bf84b640f6426cb4871c64fbd75f2b.pdf
    • https://static.usrfiles.com/ugd/54fa57_6496e34dea9f41ff8ae8f7e5b59eac45.pdf
    • https://static.usrfiles.com/ugd/b8c837_151d0201c8e44307b452a5ebf81ff981.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_off0000796e.bin
25f503e3439f154712656670fb9597c4214175472a8e8a93eb9f8ad7d8ccd27b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x796E 5084 bytes
font_01_sfnt_off00008ab4.bin
a83da514064dd61b9eb0efa6bb92af33a06373512bd700405920e2c7e614b8bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AB4 9840 bytes

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