Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b88984944848056…

MALICIOUS

PDF

44.1 KB Created: 2020-08-21 20:18:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a6504e14efcf8e50582b99146348549b SHA-1: 2dc8bf842bd78b521bbbb678994a9547d692ee42 SHA-256: 9b88984944848056d97e4b1034faf96346bb648ab7eb6b318a341f6566716bf5
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, ttraff.com, disguised as a school uniform list. This indicates a phishing or social engineering attempt to redirect the user to malicious content. The PDF also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO poisoning tactic to obscure the malicious redirector. The ML classifier 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/pify?keyword=chigwell+school+uniform+list
    • http://fufidub.wlcbands.com/uploads/1/3/2/6/132682892/3dfab8b.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7076/files/free_sample_brochure_design_templates.pdf
    • https://cdn.shopify.com/s/files/1/0432/6536/0034/files/nitidubafili.pdf
    • https://cdn.shopify.com/s/files/1/0437/9629/9937/files/xakupusedopoz.pdf
    • https://cdn.shopify.com/s/files/1/0435/1718/2104/files/95625794702.pdf
    • https://cdn.shopify.com/s/files/1/0436/4537/0518/files/dirikep.pdf
    • https://cdn.shopify.com/s/files/1/0438/5118/6336/files/88960173796.pdf
    • https://cdn.shopify.com/s/files/1/0435/5702/8001/files/5e_circle_of_the_shepherd.pdf
    • https://cdn.shopify.com/s/files/1/0440/4707/3445/files/nfu_pet_insurance_claim_form.pdf
    • https://cdn.shopify.com/s/files/1/0460/5617/7819/files/jovonitululis.pdf
    • https://cdn.shopify.com/s/files/1/0439/6656/2462/files/48378259098.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_off0000628b.bin
5e3de4b9b10878d71365b166f83760d26103e2e31ca55001978132dd1bdb0585		 pdf-font-stream PDF embedded font (sfnt) at offset 0x628B 5084 bytes
font_01_sfnt_off000073bd.bin
c71f48bd8204c81f41a4882e45cc98ec59056ad01e3f2005fe2e55206dd3ebdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73BD 9964 bytes
font_02_sfnt_off000095db.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95DB 4324 bytes

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