Malicious PDF — malware analysis report

Static analysis result for SHA-256 78f960c284863d02…

MALICIOUS

PDF

40.8 KB Created: 2020-08-31 16:44:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ac666c0a166f0be0934659680a596742 SHA-1: be4a7b9b2027037f8128f6bdae93a2b17b1347ef SHA-256: 78f960c284863d02bb672e0b003e657e1827242ff70ea03ba1868ab888eba19c
150 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, identified as a PDF link farm. One of these links, 'https://ttraff.ru/wix?keyword=company+profile+template+word+south+africa', is flagged as a malicious redirector. The presence of a link farm and a malicious redirector strongly suggests an attempt to lure users to malicious sites, likely for phishing or malware delivery.

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.ru/wix?keyword=company+profile+template+word+south+africa
    • https://static.usrfiles.com/ugd/b8c837_65823cc4e8fc42bdb755d0bc994de157.pdf
    • https://static.usrfiles.com/ugd/45fd81_aa92ccd42c134a06aa6e3e3ef842101f.pdf
    • https://static.usrfiles.com/ugd/63022f_bbd4ad7f96c148879371d010c299a605.pdf
    • https://static.usrfiles.com/ugd/271e65_1d4dede457434bab8f5c1b1b09fab1c0.pdf
    • https://static.usrfiles.com/ugd/314c35_397e1b9015d34d88973aacea08d50b58.pdf
    • https://static.usrfiles.com/ugd/3ce946_0e21ae664a5e4b02b11dc6f1c713ac0f.pdf
    • https://static.usrfiles.com/ugd/b8c837_d8405a7a87514521a8b6e3a1fa891439.pdf
    • https://static.usrfiles.com/ugd/aa14a9_735a2a274a504242a3c5eb366d74f283.pdf
    • https://static.usrfiles.com/ugd/c3f59f_42718c91f16c4f639a982c1d754d1bf6.pdf
    • https://static.usrfiles.com/ugd/a18aa6_5fcbaf27c0424407bc5a550f8d5b85ec.pdf
    • https://static.usrfiles.com/ugd/b8c837_b1eb81697ff347718ec98a3c8ebf3ed8.pdf
    • https://static.usrfiles.com/ugd/b8c837_d87cadde1a834953bef59706939dbe68.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_off000061cf.bin
5291914b0abdedbfeba231af9b2d84f86b926295d3cb1b175b36115566a08daf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61CF 5492 bytes
font_01_sfnt_off0000746e.bin
46ed6e01a49477da3649f2a673de98bd4ee2355f2105b78b9f56290953b8528f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x746E 9996 bytes

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