Malicious PDF — malware analysis report

Static analysis result for SHA-256 5607d44dff2dddb6…

MALICIOUS

PDF

43.3 KB Created: 2020-08-29 17:49:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 978b5581bcd99797fea28a7a16a851a8 SHA-1: 2e4dc74e8e0bd3c0ddc9e6d61bfbbac94cd4b7f0 SHA-256: 5607d44dff2dddb65ea3f28ba5bd50533a179cdfa51a933f9e4cc39f6bfabedf
150 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.cc' which is flagged as a malicious redirector, likely leading to a phishing or malware download site. The document body, though heavily obfuscated, contains text referencing 'League of legends leaked skins' and the malicious URL, suggesting a lure to entice clicks. The PDF also contains a large number of external links, many hosted on Shopify, which is characteristic of SEO link farm abuse to improve search engine ranking for malicious content.

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.cc/wix?keyword=league+of+legends+leaked+skins
    • https://cdn.shopify.com/s/files/1/0434/5485/7369/files/woletelevilomogo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5790/4792/files/utility_analysis_in_economics.pdf
    • https://cdn.shopify.com/s/files/1/0430/0311/7721/files/fifanizuxe.pdf
    • https://cdn.shopify.com/s/files/1/0434/7651/7014/files/dajuwakifuwos.pdf
    • https://cdn.shopify.com/s/files/1/0431/2639/0933/files/tunawunuwixavudusop.pdf
    • https://cdn.shopify.com/s/files/1/0436/2603/7411/files/hinduism_beliefs_and_practices.pdf
    • https://cdn.shopify.com/s/files/1/0432/9403/2025/files/format_for_job_application_letter.pdf
    • https://cdn.shopify.com/s/files/1/0438/6937/2576/files/ffxiv_act_no_combatants.pdf
    • https://static.usrfiles.com/ugd/b8c837_fb3e26e588d44a439b6545c18e965d58.pdf
    • https://static.usrfiles.com/ugd/b8c837_71abadd34b074b6fbf1a82c59012821b.pdf
    • https://static.usrfiles.com/ugd/565485_cb45e7af7f06445ab63d505eca13c0ee.pdf
    • https://static.usrfiles.com/ugd/b8c837_96763fa1c6714584ae678d456c5449f0.pdf
    • https://static.usrfiles.com/ugd/353d00_6003a5dcbf7e46c8a6f109f138cd03ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_dac20c1629db4edea42acf905b7e44bf.pdf
    • https://static.usrfiles.com/ugd/429b25_06dfaf5b36de421db5f53da6b322bf77.pdf
    • https://static.usrfiles.com/ugd/b8c837_aa4956cd0a6c44faac8d2f66fbb55a3b.pdf
    • https://static.usrfiles.com/ugd/b8c837_1ea3c6edf0074ba0be4996e64c65fcdb.pdf
    • https://static.usrfiles.com/ugd/b8c837_19743b1132eb45f6b0371d2cb1007d30.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_off00006bf8.bin
16022f9c7e2182824f45ebf51cdacafb11a98af4c1ccfe0737eb31898f838c05
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BF8 4984 bytes
font_01_sfnt_off00007d0c.bin
31f1d7ff11c403e25e31febbd64d97f236cfa6aea8bf4539d3c50cf9bf1574dc
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D0C 10152 bytes