Malicious PDF — malware analysis report

Static analysis result for SHA-256 e348edfa9f42e407…

MALICIOUS

PDF

43.8 KB Created: 2020-08-31 07:08:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6625d8c4d8d89a7d366c60b81c2b39eb SHA-1: 3455cdafb2e3f6aab1182d80a1f85249abe0851a SHA-256: e348edfa9f42e407244841b97ffb27125c8c71a9726029459a76187c728ff9a2
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically identified as a 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 harmful website, likely for phishing or malware distribution.

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/wix?keyword=practice+reading+passages+for+4th+grade
    • https://static.usrfiles.com/ugd/73cb9e_29bfa53dc65743ecb76677bf1a231552.pdf
    • https://static.usrfiles.com/ugd/b8c837_fe99a5d5b95e4e09b468de088de000cb.pdf
    • https://static.usrfiles.com/ugd/b6bf5b_d047b822c0d44fddaaa16f7a7ee2ec80.pdf
    • https://cdn.shopify.com/s/files/1/0438/3732/5472/files/jadual_caruman_kwsp.pdf
    • https://cdn.shopify.com/s/files/1/0431/1043/2930/files/fixovajibaz.pdf
    • https://cdn.shopify.com/s/files/1/0440/0565/4686/files/stevie_wonder_you_and_i.pdf
    • https://cdn.shopify.com/s/files/1/0434/5580/7654/files/29824089213.pdf
    • https://static.usrfiles.com/ugd/0cd019_d5cf1d73205b4de1a5c93a0025a77f04.pdf
    • https://static.usrfiles.com/ugd/0d002d_7a50c6e71f0a4398bbd272ce58704f41.pdf
    • https://static.usrfiles.com/ugd/b8c837_053c0258328d466fb7a69ceb52b4bdd0.pdf
    • https://static.usrfiles.com/ugd/b8c837_d66773c55c68409da9e384c497cd7da9.pdf
    • https://static.usrfiles.com/ugd/dc98cc_2f447eafeeec4fe8ba34e0c308d80821.pdf
    • https://cdn.shopify.com/s/files/1/0463/4551/9261/files/trane_error_code_126.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4967/files/19886213327.pdf
    • https://cdn.shopify.com/s/files/1/0439/2153/9240/files/mefurenaseripabogetazumi.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/
    • https://cdn.shopify.com/s/files/1/0463/4551/92

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006c96.bin
e40a58486e374d943aef44aab8e8adec076b519a810736a727e8af1cf8d0a21c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C96 5476 bytes
font_01_sfnt_off00007f28.bin
b6d7c229259d65638e6c9d56d40f490fb57bed1e77c254f388c7e06ff608c859		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F28 10252 bytes

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