Malicious PDF — malware analysis report

Static analysis result for SHA-256 38f90a9836dd22a1…

MALICIOUS

PDF

76.4 KB Created: 2020-08-04 11:57:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3fc7be31ed7ae7fa9e3e81fb941df1e4 SHA-1: 9eb24d6751be6b326c74e0e655f22c501ad3c449 SHA-256: 38f90a9836dd22a180271d78d4718e4f40767785afabd3b748bb48fe61b081a4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the same as the malicious redirector. This suggests the primary goal is to redirect the user to a malicious site, likely for further exploitation or credential harvesting.

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.ru/pify?keyword=capability+maturity+model+journal+pdf
    • http://files.originalpiebar.com/uploads/1/3/1/0/131069961/vutederina.pdf
    • http://files.kristendybala.com/uploads/1/3/1/4/131406849/tegilofexet.pdf
    • http://files.cbcseward.com/uploads/1/3/0/8/130874015/bopafejupor.pdf
    • http://bisaja.napacommercecenter.com/uploads/1/3/1/3/131384429/sunanop-vowojavuziva-dirixomonose-fijinigikibag.pdf
    • http://rebitufil.ageofwarbotica.com/uploads/1/3/0/7/130776031/letirujeniju-fofogevapava-gemewer.pdf
    • https://cdn.shopify.com/s/files/1/0435/2222/8376/files/38371535741.pdf
    • https://cdn.shopify.com/s/files/1/0431/6617/1296/files/runigisasiwod.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2128194791.pdf
    • https://cdn.shopify.com/s/files/1/0435/7704/9247/files/68979049287.pdf
    • https://cdn.shopify.com/s/files/1/0432/9455/6324/files/nafemexe.pdf
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/65724696763.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/30096593880.pdf
    • https://cdn.shopify.com/s/files/1/0428/5172/9574/files/music_an_appreciation.pdf
    • https://cdn.shopify.com/s/files/1/0428/2476/1510/files/ninovolad.pdf
    • https://cdn.shopify.com/s/files/1/0435/2340/8032/files/vidasajako.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kazapuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9055/9655/files/acfta_agreement_africa.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_off0000edba.bin
c6982922d4021667237bb9b68d6af7d0204aecaccce6cee6d2b4d04a4d9ee5be		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBA 5232 bytes
font_01_sfnt_off0000ff77.bin
5f419290ebd8c76e4cc122463d05d2c3abe64d683c199ad0ee3ea4826e23dbaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF77 10960 bytes

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