Malicious PDF — malware analysis report

Static analysis result for SHA-256 837e6850e4da75b3…

MALICIOUS

PDF

55.7 KB Created: 2020-09-16 17:12:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5aa083e2bcb7c3322aaa3ad12c2de267 SHA-1: f669cc3f8fafa24946ade7281bc8a766c1455ce2 SHA-256: 837e6850e4da75b3412afc2b1ea60d40c524e0300a29959bab6a30d6dfc4f2c1
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a PDF SEO link farm. One of these links, https://ttraff.club/wix?keyword=american+factory+direct+furniture, is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. No scripts were extracted from this sample.

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.club/wix?keyword=american+factory+direct+furniture
    • http://faviritir.sallydavisstudio.com/uploads/1/3/1/8/131871699/xezisibanufa-mafivakewa.pdf
    • http://files.gandydancerproductions.com/uploads/1/3/1/4/131437377/xudibevezirifa_jezuviji_zuletakagupo_paselame.pdf
    • http://guwowifax.skyeridgefarm.com/uploads/1/3/0/7/130775850/goxazu.pdf
    • http://files.jewishucb.com/uploads/1/3/1/3/131384171/a27ca0cea5790f8.pdf
    • http://files.maggiebatson.com/uploads/1/3/0/7/130740338/pepabiw.pdf
    • https://debfb906-9193-4963-b5dd-1d497da3fe0d.filesusr.com/ugd/735189_29b2317e19154cb39412885d5a2b530d.pdf?index=true
    • https://2229d4b9-89d1-4ef1-94f2-21daf137d2fb.filesusr.com/ugd/61b8bf_f3add25c2d144ebeaf4dcfb37c5f5add.pdf?index=true
    • https://8ead8120-66a4-4bc3-850e-00fe90478b94.filesusr.com/ugd/d1c05f_7c7e89fd0664492498753eec4d46a93b.pdf?index=true
    • https://c54ab9a6-fa4e-4498-b368-b24146bf408c.filesusr.com/ugd/24deb6_f3ef6431771c450b86e5106b72604b81.pdf?index=true
    • https://0d278480-dcd8-45fd-a451-0bfeec634f7c.filesusr.com/ugd/93c935_5aa260561a6045299a00d9d1e08e047e.pdf?index=true
    • https://f7b5c845-a185-43fb-9bbf-259ec816f190.filesusr.com/ugd/1cc777_408a0176bf9446f98d34feccbdf6f9c4.pdf?index=true
    • https://811a744d-bccf-476d-9bcd-68f050269b5a.filesusr.com/ugd/668a47_c0efd5db7f6342cfab4c83c36f4a7390.pdf?index=true
    • 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_off000092a7.bin
b7f317aa0f29cd34df008dc84d8f376d2685882a57a4a5cd0d86477d0adf885a
pdf-font-stream PDF embedded font (sfnt) at offset 0x92A7 2828 bytes
font_01_sfnt_off00009ca2.bin
633dbc34fad76b331a0ade6a27faeff59626e256f0879db059cd509baae880c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x9CA2 5048 bytes
font_02_sfnt_off0000adc3.bin
24464add807bf8fc2539ffca59c19651bb6ef1e762bf0673d6f7541b9ddf2c34
pdf-font-stream PDF embedded font (sfnt) at offset 0xADC3 9872 bytes