Malicious PDF — malware analysis report

Static analysis result for SHA-256 c39a106a411ad17c…

MALICIOUS

PDF

44.2 KB Created: 2020-08-31 07:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a70cb9ba1de4078fdc566e5fc73b01d1 SHA-1: 26406d54795fea8fc9eabc5f143e63b15a677ba6 SHA-256: c39a106a411ad17cb90b4f784aa52ef6c10fa929101a61d991cae006c688da15
150 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, many of which point to SEO-optimized PDF files hosted on Shopify. One of these links, however, redirects to a malicious domain (ttraff.me), indicating a potential phishing or malware distribution attempt. The ML classifier also strongly flagged this PDF as malicious.

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.me/wix?keyword=etymotic+hf5+review
    • https://cdn.shopify.com/s/files/1/0431/6774/4160/files/zetodinesonugilodikipavu.pdf
    • https://cdn.shopify.com/s/files/1/0434/3631/0693/files/nezetute.pdf
    • https://cdn.shopify.com/s/files/1/0440/8259/3957/files/action_words_for_kindergarten_with_pictures.pdf
    • https://cdn.shopify.com/s/files/1/0436/8996/7781/files/heart_failure_treatment_guidelines_2017.pdf
    • https://static.usrfiles.com/ugd/97493d_b93eea2b0b6e435794ff47d68b5531e8.pdf
    • https://static.usrfiles.com/ugd/0d089b_66f819502a37474c8c2617abce701b8a.pdf
    • https://static.usrfiles.com/ugd/3e0cb9_a7f0fdf34271476ba315b78aaa7f81b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e8723e5c2844bbfaa6b46d80c58e448.pdf
    • https://cdn.shopify.com/s/files/1/0429/0904/0803/files/kosizodopumilezijataxu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4365/1741/files/terad.pdf
    • https://cdn.shopify.com/s/files/1/0430/2100/9053/files/73785182453.pdf
    • https://cdn.shopify.com/s/files/1/0437/1569/0650/files/xerufoputavoxoser.pdf
    • https://static.usrfiles.com/ugd/cac9e4_7cc33ab66e304393a59bd57bc15078a9.pdf
    • https://static.usrfiles.com/ugd/97493d_b7bcf2f5b899426898314f13d4b3649b.pdf
    • https://static.usrfiles.com/ugd/b5472a_2793263662414d21a5b3f4fabc3c26c0.pdf
    • https://static.usrfiles.com/ugd/fb5067_081a1dc1165e48d1aa92b36fae164967.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_off0000705a.bin
52d64f8cedd4d1ee5aac2361df58af420589475626187622e3fa13936cb087a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x705A 5036 bytes
font_01_sfnt_off0000817e.bin
6c17f7caddad422aa27dc32ccf5e39f324a9ef0d7ef74e6571ccb4e06f34f7bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x817E 10408 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.