Malicious PDF — malware analysis report

Static analysis result for SHA-256 5116a533be662596…

MALICIOUS

PDF

40.1 KB Created: 2020-08-29 14:39:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 991c39ad46cee620470cb6edfe01501a SHA-1: 4e7fbf313505d802801f3858f36ec8c083582244 SHA-256: 5116a533be662596537f373d96fe77b630a7b8b408560765f9fb319ed669fa7d
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating it's a malicious redirector link farm. The primary malicious URL identified is https://ttraff.com/wix?keyword=ge+oven+f9, which is likely used to direct users to further malicious content. 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.com/wix?keyword=ge+oven+f9
    • https://static.usrfiles.com/ugd/b8c837_8149432e2c5c46d0aaa8f2b731c2bcc1.pdf
    • https://static.usrfiles.com/ugd/b8c837_06f3629ff1844fcb9a9f43b560af8846.pdf
    • https://static.usrfiles.com/ugd/b8c837_b93571abed06496fb3398a01090fb8a3.pdf
    • https://cdn.shopify.com/s/files/1/0441/2401/2696/files/21812110878.pdf
    • https://cdn.shopify.com/s/files/1/0439/3353/2315/files/93244008615.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/airbrushing_and_weathering_techniques.pdf
    • https://cdn.shopify.com/s/files/1/0427/4785/5004/files/449866329.pdf
    • https://cdn.shopify.com/s/files/1/0429/6038/8252/files/vitufujofatafal.pdf
    • https://cdn.shopify.com/s/files/1/0435/8645/3663/files/bensky_materia_medica.pdf
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/vonelobidajidawa.pdf
    • https://cdn.shopify.com/s/files/1/0428/5438/3782/files/bafosatugebuxotozolilo.pdf
    • https://cdn.shopify.com/s/files/1/0428/3482/1287/files/49202383589.pdf
    • https://cdn.shopify.com/s/files/1/0428/5913/5132/files/genudajepokabepomasepemeb.pdf
    • https://cdn.shopify.com/s/files/1/0441/4432/8856/files/elements_of_statistical_learning_hastie.pdf
    • https://cdn.shopify.com/s/files/1/0440/5349/5958/files/scope_and_lifetime_of_variables_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0433/2666/8952/files/pabexoxibewetoxaja.pdf
    • https://cdn.shopify.com/s/files/1/0432/7460/0598/files/41312795342.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e15.bin
5f9a959ab2f31daa44850c6b15c696489bcaa685351f80bfa020dead7f391cac
pdf-font-stream PDF embedded font (sfnt) at offset 0x4E15 4492 bytes
font_01_sfnt_off00005d86.bin
d52c572b4b840c572005cc8c61f91bdc296c33100c9d90ecfbab1543d85f04bb
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D86 9704 bytes
font_02_sfnt_off00007ee4.bin
260d0bbab015a8c85cf4fe67fabc4bce5dbab7a845fa425d6c4af055876b865a
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE4 16108 bytes