Malicious PDF — malware analysis report

Static analysis result for SHA-256 dbe40538665a7235…

MALICIOUS

PDF

39.9 KB Created: 2020-09-07 05:52:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4104ebcd6d5b81dc9267fbf52090ffbe SHA-1: b06d0168d21bbf6a9848e78058a0b8ee96d9fed4 SHA-256: dbe40538665a723586ae3c5c249295a6a762bd6ea820336c1b08412ec4ac1417
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a specific malicious redirector URL, indicating a phishing or scam attempt. The document body, though partially corrupted, suggests a lure related to an 'application form'. The primary malicious URL, https://ttraff.link/wix?keyword=ap+ccrc+application+form, is a critical indicator of malicious redirection. The presence of numerous other PDF links suggests a link farm designed to distribute malicious content or traffic.

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.link/wix?keyword=ap+ccrc+application+form
    • https://static.usrfiles.com/ugd/b13fd1_16e00987450f4970aeef2e2dcf962243.pdf
    • https://static.usrfiles.com/ugd/4d548e_a04f04f366634561b6c1fc92ad9ecdab.pdf
    • https://static.usrfiles.com/ugd/70a38d_4cdfa16f5db8452cbcfcf34ef66bcda7.pdf
    • https://static.usrfiles.com/ugd/0ebc1f_3a37a4d8fb81449daddce66b444577f9.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/hp_elitebook_8470p_drivers.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/32422481315.pdf
    • https://cdn.shopify.com/s/files/1/0435/3091/1899/files/12701105303.pdf
    • https://static.usrfiles.com/ugd/b54ff4_21e1486b830d441d8e7466bb1b6f68be.pdf
    • https://static.usrfiles.com/ugd/70c1f8_c19082c0beaa42af95a68473161d8138.pdf
    • https://static.usrfiles.com/ugd/26481d_0cd85c66075145de8b24d4d01cd0381a.pdf
    • https://static.usrfiles.com/ugd/83e584_b62108e39afa4728bd7f78620c3adbe3.pdf
    • https://static.usrfiles.com/ugd/ab922d_b5b1ba56867a4945a5927d23fc88ce94.pdf
    • https://static.usrfiles.com/ugd/e8e253_80b2ce7adcf3494cb13f02ffee17edf3.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_off0000610a.bin
b09730d576851452584db2c24624d6b789b65e1c244da7bfd36d02cc9b589afc
pdf-font-stream PDF embedded font (sfnt) at offset 0x610A 4972 bytes
font_01_sfnt_off000071e6.bin
6ef835a1a332efec6776c6d0c5bb8ca7d7f200882c59c8c8923e4f9a5e2c3b35
pdf-font-stream PDF embedded font (sfnt) at offset 0x71E6 9732 bytes