Malicious PDF — malware analysis report

Static analysis result for SHA-256 446632825328813d…

MALICIOUS

PDF

43.0 KB Created: 2020-08-30 19:00:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3953b41c32fd789992f9c4352520532 SHA-1: ae2e3c899964ddbc7f1b2ac04bc90eb1594c08ef SHA-256: 446632825328813d031fccc0faf13fd8d6dc8d00de5bf148435b49de7fa5e200
150 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, ttraff.com, disguised as a Fiji passport application form. This indicates a phishing attempt to redirect users to malicious infrastructure. The PDF also contains a large number of links to other PDFs hosted on static.usrfiles.com, suggesting a link farm for SEO manipulation or to obscure the primary malicious link. No scripts were extracted, but the primary malicious intent is to redirect the user to the ttraff.com URL.

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.com/wix?keyword=fiji+passport+application+form+nz
    • https://static.usrfiles.com/ugd/b8c837_cf6d042501604a5ab710fa21e3333053.pdf
    • https://static.usrfiles.com/ugd/ce0e6d_7f1930ee8db04871868418512144ec23.pdf
    • https://static.usrfiles.com/ugd/b8c837_8038d36d41934821ac87470cbef14c3d.pdf
    • https://static.usrfiles.com/ugd/3e9e83_dbe1bb62592645adb2df66a53b4139d4.pdf
    • https://static.usrfiles.com/ugd/9757e7_951b333ce0224a848947a026f39f9018.pdf
    • https://static.usrfiles.com/ugd/8ab72e_5b8f3684aa814efbadbe48955e4df3ff.pdf
    • https://static.usrfiles.com/ugd/b8c837_1c9c9cb729df4c818de01045768e1714.pdf
    • https://static.usrfiles.com/ugd/3aca14_bacd75a6a7e34029a0a379e54624c78a.pdf
    • https://cdn.shopify.com/s/files/1/0437/1188/9562/files/cbse_neet_answer_key_2016.pdf
    • https://cdn.shopify.com/s/files/1/0432/8348/0736/files/zemazoxuvigixowube.pdf
    • https://static.usrfiles.com/ugd/b8c837_302454ce0cdf42f5b196069a7f5d608f.pdf
    • https://static.usrfiles.com/ugd/c7ef1a_875c4a0a46874969be3e4f608e2f0098.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_off0000696f.bin
928abb284071f509beea4e968a11e341f48b872a3b79672c1fe7aaf7bc3d773b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x696F 5244 bytes
font_01_sfnt_off00007b34.bin
4b61e5c1c717022801c23952163e7ad0871bb458c861c77bfea6842d3f95e85c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B34 10536 bytes

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