Malicious PDF — malware analysis report

Static analysis result for SHA-256 afbe83d371894867…

MALICIOUS

PDF

56.9 KB Created: 2020-08-20 21:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a3db6f6cf1b1253e967003ced634e191 SHA-1: 042011b0dafd3dc4e146cc0e7e0492f140649dba SHA-256: afbe83d3718948679be5e7fd2b80235b5b37478c6f177375c296dbe405a923c7
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 a malicious redirector. The primary link, 'https://ttraff.com/pify?keyword=bioplastic+ppt+template', is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains this URL and other PDF links, suggesting a link farm or redirection strategy to lead the user to a malicious site.

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=bioplastic+ppt+template
    • http://puwifup.simplybirthclasses.com/uploads/1/3/1/8/131856669/680fffd088fc.pdf
    • http://fumugij.morningswithamissionary.com/uploads/1/3/1/4/131453574/vujesa_zoramil_pezavilel.pdf
    • http://files.randengineering.ca/uploads/1/3/0/7/130776211/lopobu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2267/2284/files/jagoneva.pdf
    • https://cdn.shopify.com/s/files/1/0435/1610/0776/files/2020_calendar_planner_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/7684/5728/files/characteristics_of_servant_leadership.pdf
    • https://cdn.shopify.com/s/files/1/0440/7807/1960/files/pukiriwutajegifipim.pdf
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/64922462933.pdf
    • https://cdn.shopify.com/s/files/1/0435/3795/7023/files/bolsa_de_valores_de_el_salvador_reportos.pdf
    • https://cdn.shopify.com/s/files/1/0428/7827/1641/files/75666415693.pdf
    • https://cdn.shopify.com/s/files/1/0435/3835/0231/files/6575115014.pdf
    • https://cdn.shopify.com/s/files/1/0431/4929/5776/files/pubawimutone.pdf
    • https://cdn.shopify.com/s/files/1/0438/0747/3821/files/wusepunerarosodejujib.pdf
    • https://cdn.shopify.com/s/files/1/0431/5217/9364/files/gefiwijevepowedobul.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_off00009915.bin
3852749f6757b6ba8fb1bbd3098a287a8e52d34cece4cc138edb17303647806b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9915 1836 bytes
font_01_sfnt_off0000a20c.bin
76cfcec866e2134f56e713077465adbed4bb5cb5ca466232085f23f9864645d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA20C 5032 bytes
font_02_sfnt_off0000b30e.bin
5c4a0ca8a96d8206a216fd3d07914cbc4da8ad33035d1b7fc1b8b9b5c591e6be		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB30E 10436 bytes

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