Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7ffa4b2754d7796…

MALICIOUS

PDF

47.3 KB Created: 2020-08-29 18:27:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fb85bb9e5248536809f1ae2f351d794 SHA-1: 794c71e07e3de296020f88a2859a2ff1000bca05 SHA-256: b7ffa4b2754d7796128dff0ed7e81b2b8e674505dfd5ac087042e207e6253a43
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF document contains a prominent link related to 'war robots hack no verification', which redirects to a known malicious domain (ttraff.com). This suggests a social engineering lure to trick users into visiting a potentially harmful site. The presence of a large number of embedded links, many pointing to static.usrfiles.com, indicates a link farm strategy, likely to obscure the final malicious destination or to improve SEO for malicious content. No scripts were extracted, but the primary attack vector appears to be a malicious redirector.

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=war+robots+hack+no+verification
    • https://static.usrfiles.com/ugd/93c935_eae9dc9931de4b378c0c3619b355b810.pdf
    • https://static.usrfiles.com/ugd/b8c837_219904eb461341b78c0d4031c6bdbdb9.pdf
    • https://static.usrfiles.com/ugd/b8c837_d5708ec81aa04e80abf8143ce2ac87a4.pdf
    • https://static.usrfiles.com/ugd/b8c837_d16976069f194bbc8d388cb05b025464.pdf
    • https://static.usrfiles.com/ugd/b8c837_4364837c90e34bed80cf35080e482e5a.pdf
    • https://static.usrfiles.com/ugd/b8c837_79d62f8333df476db4b78d181843641c.pdf
    • https://static.usrfiles.com/ugd/cdb50c_ec968080590842dbb15377096c482e0d.pdf
    • https://cdn.shopify.com/s/files/1/0436/3295/1446/files/aristoteles_la_politica.pdf
    • https://cdn.shopify.com/s/files/1/0447/4788/2650/files/control_total_de_calidad_libro.pdf
    • https://static.usrfiles.com/ugd/b8c837_320fc05b690a4259b734d9da7234c625.pdf
    • https://static.usrfiles.com/ugd/b8c837_950486a450b343529280ce17b1cf9dfd.pdf
    • https://static.usrfiles.com/ugd/b8c837_26c788f36db6459f9d36e97c6ca3440b.pdf
    • https://static.usrfiles.com/ugd/299074_0cebbd6c8de84646983b8f115e85916d.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_off00007add.bin
238c37ff74168bf1188ce2007afc04760e0ae5d4a3ad6b5f6a68568cb2395fff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ADD 5212 bytes
font_01_sfnt_off00008ca7.bin
fe3f4df8f671a52ba1f02ae90b40c3e5a86e5c4f2a852f6f7d4370c644fdc815		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CA7 10368 bytes

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