Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0a6c6ccccd00c3a…

MALICIOUS

PDF

45.7 KB Created: 2020-08-03 10:05:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f56ca1075c27776e5ec6ef92fc0c076 SHA-1: 21430dc1c10ffb47c88f197c25f292103aa1cf77 SHA-256: e0a6c6ccccd00c3a0988e6458b42bcc7eb8fca5c567ea34bb653878fc5e6bd6e
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.cc/pify?keyword=missouri+real+estate+contract+pdf', is designed to lure users into clicking it under the guise of a real estate contract. The PDF also contains a link farm heuristic, indicating a large number of external links, with the primary one pointing to a Shopify domain. The file was generated by wkhtmltopdf, suggesting it was likely created programmatically to host these links.

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/pify?keyword=missouri+real+estate+contract+pdf
    • http://files.sketchingshadowsdigital.com/uploads/1/3/0/9/130969085/2711156.pdf
    • http://files.humananatomyandphysiology.org/uploads/1/3/2/6/132695915/jatizolitoxome.pdf
    • http://files.eileenreynolds.com/uploads/1/3/0/7/130738639/gilonutuzev_tasel_gujirofi_kumofutovukin.pdf
    • https://cdn.shopify.com/s/files/1/0434/5059/7528/files/66953947039.pdf
    • https://cdn.shopify.com/s/files/1/0438/0485/2386/files/dont_trust_the_bitch_in_apartment_23.pdf
    • https://cdn.shopify.com/s/files/1/0431/5198/2754/files/84221310984.pdf
    • https://cdn.shopify.com/s/files/1/0437/2499/6758/files/rezizapevamavopave.pdf
    • https://cdn.shopify.com/s/files/1/0432/2417/0664/files/39824142840.pdf
    • https://cdn.shopify.com/s/files/1/0435/8530/6782/files/piluteje.pdf
    • https://cdn.shopify.com/s/files/1/0433/2745/5387/files/36017090525.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/11383010616.pdf
    • https://cdn.shopify.com/s/files/1/0439/2468/4968/files/dovasejuramal.pdf
    • https://cdn.shopify.com/s/files/1/0427/9946/4611/files/muwuzuguxisozu.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_off0000740f.bin
65d157158a0cbc516494080941df62089599a3d0af1c4c0a5d227f62e96a54b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x740F 5156 bytes
font_01_sfnt_off000085b5.bin
0ce10b290aef8fe4e0e59c05a76abc101da37af29173fa00fc1c92d024dd0c35		 pdf-font-stream PDF embedded font (sfnt) at offset 0x85B5 10760 bytes

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