Malicious PDF — malware analysis report

Static analysis result for SHA-256 35ad1be064f36b64…

MALICIOUS

PDF

42.6 KB Created: 2020-08-29 16:40:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae3ef704bda4229cae5dbdebe4671482 SHA-1: dfa0b43d645739d2bbd1dead5886aa06f1395d72 SHA-256: 35ad1be064f36b64ed75e60dc4695cedc59fb6754b9599d738a6ca89ecaa1ec1
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=streams+in+the+desert+august+17'. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded URLs, suggesting an attempt to drive traffic to external sites. The ML classifier also strongly indicated maliciousness. No scripts were extracted, but the presence of a malicious redirector URL is a high-confidence indicator of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wix?keyword=streams+in+the+desert+august+17
    • https://static.usrfiles.com/ugd/b8c837_dfc587d6c35a4f17877ed0369fc95c21.pdf
    • https://static.usrfiles.com/ugd/b8c837_40838fca2501488ba6a597bd8f0cc2a8.pdf
    • https://static.usrfiles.com/ugd/b8c837_b34f62ec83c045cb9e642d86486e82c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_dc9f49499aad4e9d969b7b51fc7e39d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_f1fac94d232c474b8aa36e3b150783ab.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f4329fbca514f19b89026caab24482f.pdf
    • https://static.usrfiles.com/ugd/b8c837_127b7f64e5fe454c97d8858f93b75350.pdf
    • https://static.usrfiles.com/ugd/b8c837_a9043a101fb0457c8c2fb8b101a3c8d6.pdf
    • https://static.usrfiles.com/ugd/b8c837_b67014d539ea4db3bcd7b30ca35ce6ec.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6301/files/gegosuv.pdf
    • https://cdn.shopify.com/s/files/1/0435/8792/8223/files/cambridge_dictionary_full.pdf
    • https://cdn.shopify.com/s/files/1/0431/1311/9905/files/lerowufagexoraxat.pdf
    • https://cdn.shopify.com/s/files/1/0429/7588/7523/files/xogutawatuvowatubebuwefeg.pdf
    • https://cdn.shopify.com/s/files/1/0438/3657/1808/files/same_old_lang_syne_piano_sheet_music.pdf
    • https://cdn.shopify.com/s/files/1/0427/7764/1116/files/anatomy_and_physiology_openstax_college.pdf
    • https://cdn.shopify.com/s/files/1/0439/3864/4123/files/39926646991.pdf
    • https://cdn.shopify.com/s/files/1/0430/8982/1845/files/90494540833.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://static.usrfiles.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000687c.bin
e4db204fe24d3630451fcff9d31c052e26bb057e748508cd8f5d76bb9a1ab4ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x687C 5440 bytes
font_01_sfnt_off00007ac7.bin
7edc03c32e9c7bf6d4d078b79f7d0826cc20ab0b27a0ebae4de014a12377e828
pdf-font-stream PDF embedded font (sfnt) at offset 0x7AC7 10028 bytes