Malicious PDF — malware analysis report

Static analysis result for SHA-256 af5d48948bab391c…

MALICIOUS

PDF

43.2 KB Created: 2020-08-30 00:06:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 43c87d8fe5e46fd4624a56d1d3d4f975 SHA-1: 2e8dc099a0e39ea402b4dedb0916ee86fa1086ec SHA-256: af5d48948bab391c2440d8f52913761872d876843695516c6301b59c55b5b4b6
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised with a 'Harry Potter' keyword. This suggests a social engineering lure to drive traffic to malicious infrastructure. The PDF also contains a large number of external links, many pointing to static.usrfiles.com, which is indicative of a link farm or SEO poisoning attempt. No scripts were extracted from this sample.

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=harry+potter+the+sorcerer%2527s+stone+mp
    • https://static.usrfiles.com/ugd/097bd5_2de5a04fc0284fd3994e83546e613eef.pdf
    • https://static.usrfiles.com/ugd/09c3c7_46450356b3224218b945952cb836c2d9.pdf
    • https://static.usrfiles.com/ugd/b8c837_27eceed8fa744e81b2b2206a930b00ed.pdf
    • https://static.usrfiles.com/ugd/0e2875_f8c9bbfd47a8407cb17734413665dd2d.pdf
    • https://static.usrfiles.com/ugd/221f3a_df47543cdf774d61b0ce459477cfb6fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_41741e7f48c141b7bf49d0f3b2fdd660.pdf
    • https://static.usrfiles.com/ugd/b8c837_f7b8eeedd6f3414f9bdc56a19ec6cb70.pdf
    • https://static.usrfiles.com/ugd/dad90e_564b698188dd48f08431ace13f72082e.pdf
    • https://cdn.shopify.com/s/files/1/0434/8870/6717/files/54944307129.pdf
    • https://cdn.shopify.com/s/files/1/0431/0102/8503/files/durifinomanun.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005473.bin
a3206ca0ccc359142dc3fa3216f2bbd01b7099fa6f25254a31e5b4038100ba52		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5473 5236 bytes
font_01_sfnt_off00006626.bin
e6759864b249459a756084dd03935b88b416fe155ae105788cd3ce86e0947486		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6626 10936 bytes
font_02_sfnt_off00008b30.bin
d781c508aaf473e50263a6aabc3f4161b7fa10724c54bb8d35addee38a7f1c44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B30 16164 bytes

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