Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa4eaeb15e1fb079…

MALICIOUS

PDF

44.0 KB Created: 2020-08-31 00:08:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a944460e6e699a00e35404726b68bda7 SHA-1: f62ffbebaa7146c43b5abfcd4a6c18692f4ef805 SHA-256: aa4eaeb15e1fb079c6768345b5a20d297cac053d66faff9feb9b42505e4c5ef2
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=adverbial+phrase+tree+diagram'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be luring the user to a malicious site via the embedded link.

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=adverbial+phrase+tree+diagram
    • https://static.usrfiles.com/ugd/a838c0_f3c847f3aece47d5897e4de038d26585.pdf
    • https://static.usrfiles.com/ugd/b9801a_5731bb9f4cf445a688ea1e0cfd191a39.pdf
    • https://static.usrfiles.com/ugd/33ab24_635e4c8a765f4e4ba0aebd24d184336f.pdf
    • https://static.usrfiles.com/ugd/cf14a4_cfd224a33f8d4d5a84f363a725cd27e0.pdf
    • https://cdn.shopify.com/s/files/1/0449/0359/6187/files/poxupuvulumisexad.pdf
    • https://cdn.shopify.com/s/files/1/0438/1822/1730/files/awg_ampacity_table.pdf
    • https://cdn.shopify.com/s/files/1/0434/1560/1314/files/secret_service_agent_salary.pdf
    • https://cdn.shopify.com/s/files/1/0429/6104/3605/files/87043040360.pdf
    • https://cdn.shopify.com/s/files/1/0432/3311/6315/files/jutabej.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/lipefopazipuxikaxezugeson.pdf
    • https://cdn.shopify.com/s/files/1/0431/7180/7394/files/ic_rc_adc_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/0219/2287/files/wood_elves_grand_campaign_guide.pdf
    • https://cdn.shopify.com/s/files/1/0451/3739/5866/files/84827831412.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/cryptocurrency_investing_for_dummies_download.pdf
    • https://cdn.shopify.com/s/files/1/0436/5893/6473/files/tracy_chapman_greatest_hits.pdf
    • https://cdn.shopify.com/s/files/1/0432/8472/5926/files/guzuzevoxofewerozazupa.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_off00006662.bin
29fb6d5a110ce386ef12be26e65e11b8b93a7189b297db0e760b0b190163cf18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6662 5560 bytes
font_01_sfnt_off0000791f.bin
38a5d531cdec05a624b0c7fe22fb351510145c766ef2b1d32eec6fecbf710d1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x791F 13496 bytes

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