Malicious PDF — malware analysis report

Static analysis result for SHA-256 35a739f930d0d0c1…

MALICIOUS

PDF

39.4 KB Created: 2020-08-30 13:40:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01b36c8ddab08d57bb44d34159b61d8d SHA-1: 7534e71e28e6e5bb5401b894dfea3502e909ea41 SHA-256: 35a739f930d0d0c10dacacef43757dacd049f22db07555cbc729f9c252109edf
150 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=wwe+smackdown+vs+raw+iso+psp'. This URL is likely part of a phishing or malware distribution campaign. The document body, though heavily obfuscated, also contains this URL, reinforcing its malicious intent. The presence of a large number of external PDF links, many pointing to benign content, suggests a potential SEO poisoning or link farm tactic to obscure the malicious redirect.

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=wwe+smackdown+vs+raw+iso+psp
    • https://static.usrfiles.com/ugd/913720_627defc7b9ce43dd960351da6926fd9e.pdf
    • https://static.usrfiles.com/ugd/b8c837_0992f025c53541fca04e5c472a853b50.pdf
    • https://static.usrfiles.com/ugd/defdb4_d365376928e04d2192a6a7cc7904af33.pdf
    • https://static.usrfiles.com/ugd/b8c837_e1e15348104e4cf1a43f89dd17fac07f.pdf
    • https://cdn.shopify.com/s/files/1/0435/6141/8913/files/36637443405.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tedogunugovosilogupex.pdf
    • https://cdn.shopify.com/s/files/1/0433/5638/9528/files/jurnal_ekstrak_daun_binahong.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/crazy_machines_3_lsung.pdf
    • https://cdn.shopify.com/s/files/1/0432/6581/8789/files/sotusapijanujuwukapanufol.pdf
    • https://static.usrfiles.com/ugd/52b593_572dba166fef4f7baeaaec1d87a03b20.pdf
    • https://static.usrfiles.com/ugd/b8c837_09eb44ff6261448a9168e17322fdcf36.pdf
    • https://static.usrfiles.com/ugd/b8c837_07678323f78b4d569390d06684eff081.pdf
    • https://static.usrfiles.com/ugd/b65acf_ccd282a14d474d57bd466c96124f462e.pdf
    • https://static.usrfiles.com/ugd/b8c837_12aba08e840a499e9130b786897c4b04.pdf
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/bajakime.pdf
    • https://cdn.shopify.com/s/files/1/0430/2379/4337/files/lonezufafilibumilimiwoge.pdf
    • https://cdn.shopify.com/s/files/1/0431/5850/3590/files/abcd_3_ke_song.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_off00005ae3.bin
b38a62898f1fe8cac2bb3e52e32fb2512820b25a84a2e3aa0fa84f699575fa64
pdf-font-stream PDF embedded font (sfnt) at offset 0x5AE3 5416 bytes
font_01_sfnt_off00006d56.bin
97883bdcbbe6213417bb3e68face2d048d7bc8b4b463988509eaaf99d655017e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6D56 10432 bytes