Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a6649503f9291a7…

MALICIOUS

PDF

46.4 KB Created: 2020-09-01 07:30:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8135e5ef26c0956c48b6b2b7982c07db SHA-1: cdadbf24913c6a8974868a7b89cd49a013c491d3 SHA-256: 9a6649503f9291a7f05137ec0844eb3e20e5855ac22b75f4f089b9a89255eaf8
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used to overwhelm security filters or to distribute malicious content. One of the embedded URLs, 'https://ttraff.com/wix?keyword=beautiful+quotes+on+life+free', is flagged as a known malicious redirector. The document body, though heavily obfuscated, appears to contain this URL and other links to PDF files hosted on 'static.usrfiles.com'. This suggests the PDF's primary purpose is to redirect users to potentially harmful websites.

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=beautiful+quotes+on+life+free
    • https://static.usrfiles.com/ugd/078c79_5ebf4f3018dd48c694dc573a3685ca41.pdf
    • https://static.usrfiles.com/ugd/d5d855_d47970a82d8042bebe85a62c1435c260.pdf
    • https://static.usrfiles.com/ugd/628a76_3780ad5e09014bdeb63e85ca41636b44.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b975aed840f46c6a6f75c187cd3bbef.pdf
    • https://static.usrfiles.com/ugd/8127dd_e1d2908404a247378032955e60efb616.pdf
    • https://static.usrfiles.com/ugd/f459ea_f4134be3469d4d8cb7bb5686c43ef0fa.pdf
    • https://static.usrfiles.com/ugd/f55bec_acd52f9477b54cd098d5a2fca1070dd4.pdf
    • https://static.usrfiles.com/ugd/1c8c6c_41ca40c67ff247cdb8b198cc64ae37b5.pdf
    • https://static.usrfiles.com/ugd/0a0016_14e5504dc47e49db80feaa6ded50e947.pdf
    • https://static.usrfiles.com/ugd/b8c837_89a4ea3ff8a14ee09f582ce94b139d16.pdf
    • https://static.usrfiles.com/ugd/3aee12_68a7a5fd47d9468bbe77443efb0872f9.pdf
    • https://static.usrfiles.com/ugd/d63aaf_cc58fabf0bd54d60bfdd1ea965b77686.pdf
    • https://static.usrfiles.com/ugd/55cc32_d6311188dd2f433891336544649b2611.pdf
    • https://static.usrfiles.com/ugd/ef7b09_0f901ab7efb744f88eb31a991d26393b.pdf
    • https://cdn.shopify.com/s/files/1/0431/0453/4692/files/poster_bodoni_lt_bt_free.pdf
    • https://cdn.shopify.com/s/files/1/0436/8056/3350/files/99980553304.pdf
    • https://cdn.shopify.com/s/files/1/0437/5353/7685/files/cch_tch_trang_online.pdf
    • https://cdn.shopify.com/s/files/1/0429/9007/6067/files/lerepowatimuberilixuramo.pdf
    • https://cdn.shopify.com/s/files/1/0451/1324/5848/files/8884279123.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_off00007986.bin
c76126e7f23637c743a1095df3fe670a67e2ae409322760d61d78d737507daa5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7986 4936 bytes
font_01_sfnt_off00008a66.bin
8c7fb900f710aecb35891b48432970467207fb4d25527a5b2f3098a1e96e90ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x8A66 10096 bytes