Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a172a8a6da031ca…

MALICIOUS

PDF

42.9 KB Created: 2020-08-20 03:10:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae7c492cb71edbefff03756284c9ba56 SHA-1: d6c0c84c6786afceafb63c3976e4bce83bebc5ae SHA-256: 9a172a8a6da031ca58c99395f6ed20e11c23f3d91c3ebad5804fd8d77d8d64e6
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link disguised as a 'Gartner report 2018 siem'. This link points to ttraff.com, which is flagged as malicious. The document also contains a large number of embedded links, many pointing to shopify.com, likely as part of an SEO link farm to obscure the malicious redirector. The ML classifier also strongly indicated maliciousness.

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=gartner+report+2018+siem
    • http://files.harrowphotographer.co.uk/uploads/1/3/1/4/131438180/3924126.pdf
    • https://cdn.shopify.com/s/files/1/0433/5845/3918/files/30380525771.pdf
    • https://cdn.shopify.com/s/files/1/0432/9183/6566/files/bulk_density_of_powder.pdf
    • https://cdn.shopify.com/s/files/1/0434/3696/6055/files/46065424685.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/57990975755.pdf
    • https://cdn.shopify.com/s/files/1/0432/8062/9913/files/bise_sukkur_12th_result_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/0913/8084/files/17683197474.pdf
    • https://cdn.shopify.com/s/files/1/0450/9813/9813/files/78092966785.pdf
    • https://cdn.shopify.com/s/files/1/0431/8996/0861/files/basic_laboratory_equipments_used_in_microbiology.pdf
    • https://cdn.shopify.com/s/files/1/0440/1430/5430/files/tugixigojutimufanidusubon.pdf
    • https://cdn.shopify.com/s/files/1/0428/3983/4780/files/66293900304.pdf
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/79645586809.pdf
    • https://cdn.shopify.com/s/files/1/0430/7927/0549/files/2009_brute_force_750_performance_parts.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_off0000699f.bin
04b465b38e79b16a444b927afb6dd14c65bb0f2b036aa6c9ebd4b2c24760cea4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x699F 5484 bytes
font_01_sfnt_off00007c31.bin
d53c2893f6b72c071e997d6b478941140afe486f9c38d65f8fff08acad0e44aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C31 10236 bytes

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