Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8e96f06a7b82ff2…

MALICIOUS

PDF

51.0 KB Created: 2020-08-22 13:17:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 482d4f9718e46c730574fbda5749206c SHA-1: 786428b329ac94a1abf9f0d303388e5f34176f94 SHA-256: f8e96f06a7b82ff2401f7b96da59780097af44333deff613cf81b23c2c838816
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains a large number of embedded links, identified as a link farm, designed to redirect users to malicious sites. One critical heuristic flagged a direct link to a known malicious redirector, 'ttraff.cc', which is used in conjunction with keywords suggesting a lure for technical documents. The document body itself is heavily obfuscated but contains the same redirector URL and numerous other URLs hosted on cdn.shopify.com, likely part of the SEO link farm strategy. No scripts were extracted from this sample.

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.cc/pify?keyword=ansys+fluent+mesh+file+format
    • http://files.inspiringlibraries.com/uploads/1/3/1/4/131453111/5895370.pdf
    • http://files.aliorientalrugs.com/uploads/1/3/1/8/131858975/mudufumuzovunu_tumakipin.pdf
    • http://files.strive4business.co.uk/uploads/1/3/2/6/132695755/gawolizola.pdf
    • https://cdn.shopify.com/s/files/1/0433/9413/8277/files/xesegelojodo.pdf
    • https://cdn.shopify.com/s/files/1/0437/6775/8999/files/64104725125.pdf
    • https://cdn.shopify.com/s/files/1/0432/2381/0203/files/anywhere_travel_guide.pdf
    • https://cdn.shopify.com/s/files/1/0445/3964/2015/files/central_venous_catheter.pdf
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/78011543036.pdf
    • https://cdn.shopify.com/s/files/1/0432/8318/5832/files/82606648328.pdf
    • https://cdn.shopify.com/s/files/1/0437/7542/6721/files/manual_de_antibiticos_antibacterianos.pdf
    • https://cdn.shopify.com/s/files/1/0435/4431/4024/files/simple_template_html_css_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/3160/0031/files/snapchat_hack_app.pdf
    • https://cdn.shopify.com/s/files/1/0432/3206/7748/files/fine_dining_restaurant_business_plan_sample.pdf
    • https://cdn.shopify.com/s/files/1/0437/6775/8999/files/66451021177.pdf
    • https://cdn.shopify.com/s/files/1/0433/6877/5841/files/fijodeririboba.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_off000083b7.bin
000df70d76245890e7527b23e72e81ae3b880a0cb4de1df299acfed5e6203ad5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83B7 5100 bytes
font_01_sfnt_off000094e0.bin
dcac6163b01a25ade3cf6af9fc276c00c29505398380cb70d69b1c5db7d4667b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94E0 13036 bytes

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