Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb923690f5c656fe…

MALICIOUS

PDF

51.7 KB Created: 2020-08-30 22:30:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d2abfafb7ab6db29140f98741ea534a6 SHA-1: 2451957750d909d835725bd94039fac635607ef8 SHA-256: bb923690f5c656fefdaa39583e086ed98690b37dd2afa8dc840f22233243dc1f
128 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=the+girl+from+ipanema+tab'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains references to urgency lures and embedded URLs, reinforcing the malicious intent. The primary attack pattern involves tricking the user into clicking the malicious link, which then redirects them to potentially harmful content.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=the+girl+from+ipanema+tab
    • https://static.usrfiles.com/ugd/ae15ca_6431e3ad85c74035a7e1ef73bf7d712b.pdf
    • https://static.usrfiles.com/ugd/b8c837_7b096c093df247f990f3b43c424a6382.pdf
    • https://static.usrfiles.com/ugd/b8c837_903caf40da2c4745b178f218f357d188.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc8001a335954c0597ff760a643b0b0d.pdf
    • https://static.usrfiles.com/ugd/b8c837_99b0b72cad1e4a6c9c1a156e30f12876.pdf
    • https://static.usrfiles.com/ugd/97634b_799cba12e14f4cc38a999f69cf2c7aeb.pdf
    • https://static.usrfiles.com/ugd/7dd30d_fd0d2910221f46cbafc37e0f0f024943.pdf
    • https://static.usrfiles.com/ugd/166c09_527fdc6eb87342f99b946dc2e420182f.pdf
    • https://static.usrfiles.com/ugd/b8c837_2fb4484087e64ace9d7fdfd0b98e83e3.pdf
    • https://static.usrfiles.com/ugd/913720_db30ac6f86bf44d396813b38cd746b78.pdf
    • https://cdn.shopify.com/s/files/1/0460/3694/3007/files/20505689819.pdf
    • https://cdn.shopify.com/s/files/1/0427/8140/9436/files/semakizunuwum.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nedodakamilutejevojive.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8090/files/self_evaluation_essay_template.pdf
    • https://static.usrfiles.com/ugd/b8c837_a0be487f52944c82adfb2723d1fd4d16.pdf
    • https://static.usrfiles.com/ugd/c20ea7_2052a55b839b4265a3160ef88e50ca90.pdf
    • https://static.usrfiles.com/ugd/e3ed1f_dccb21c523064b72979f850074b2a0a6.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c8bc529c4e34f1496d0b4591b5addac.pdf
    • https://static.usrfiles.com/ugd/26481d_65fc3ece9faf4a1694bebf433049699e.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_off00007e93.bin
65824a16f5c82cf429c787d575de8db6f6326a02a6812e62f2071c230e686ff8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E93 5012 bytes
font_01_sfnt_off00008f73.bin
4861431d9258ee77f581dc09a5dbefd36bc679df3ad9e79cae202c7e94c45692		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F73 10824 bytes
font_02_sfnt_off0000b3f4.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3F4 4324 bytes

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