Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0a6f73ddf6c100b…

MALICIOUS

PDF

40.8 KB Created: 2020-09-10 22:33:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b4cd4085f5ecd4a53f891501352658a SHA-1: be78e6e91988d7e5bb2012e09978f114e483e515 SHA-256: b0a6f73ddf6c100b4831ffdfa28aedb660fe5ed1471b09c620c5c234804fc178
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to a malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.me/wix?keyword=best+barcode+scanner+app+for+android, which is likely the initial lure. The PDF also contains a PDF_SEO_LINK_FARM heuristic, suggesting it hosts multiple links, with the first being https://static.usrfiles.com/ugd/b88e3d_779c30702a28434f90f014f810a940b1.pdf, likely part of a link farm to improve search engine ranking for malicious content.

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=best+barcode+scanner+app+for+android
    • https://static.usrfiles.com/ugd/b88e3d_779c30702a28434f90f014f810a940b1.pdf
    • https://static.usrfiles.com/ugd/930050_cbe17e7db82d452ebabf5c6acb44415a.pdf
    • https://static.usrfiles.com/ugd/b148e5_053ed25e7b8943239d8737aebf41ca37.pdf
    • https://static.usrfiles.com/ugd/564d2e_b78595a5261d47139d082ac281b0d385.pdf
    • https://static.usrfiles.com/ugd/d5d855_30dedd34a1de41ccafeb11649be89973.pdf
    • https://static.usrfiles.com/ugd/eeb7bd_92e9c740469c4eeebf81094b5fe5d5a6.pdf
    • https://static.usrfiles.com/ugd/5c7528_79cf9723423a46929c3c04e716184ffe.pdf
    • https://static.usrfiles.com/ugd/035627_cb4f0ec274ae4afdb8a360b8edae3262.pdf
    • https://static.usrfiles.com/ugd/7f16bd_80249324e1b744f9a73e2705cc10570b.pdf
    • https://static.usrfiles.com/ugd/8d5d69_faabbe74e830417790bf64972b99439d.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_off000062b9.bin
f459da2a8c83c10510e4128340c2cb67484b42abb8ce6f70c2f9e94177d2b753		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B9 5308 bytes
font_01_sfnt_off000074d0.bin
83d0c0e9295d82ded0f8e92caff0289f90b783481e38f511dfd6f5fe5eb72f2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D0 9924 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.