Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e56779e89a145a…

MALICIOUS

PDF

41.6 KB Created: 2020-08-18 16:32:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b10df304719152d65d72347b5b448d43 SHA-1: a11e16a4f9a4d17efcfbcd3bf3e9cd05814252a2 SHA-256: f3e56779e89a145aeb64aa71a7884a87fb6c0a6f6dc0d4ee06d9f8b0b00f8adc
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, however, redirects to a known malicious domain, ttraff.ru, disguised as a financial analysis report. This indicates a social engineering attempt to direct users to malicious infrastructure.

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.ru/pify?keyword=financial+analysis+report+of+apple+inc
    • http://files.floydmath.com/uploads/1/3/0/9/130969960/1548788.pdf
    • https://cdn.shopify.com/s/files/1/0433/2807/7992/files/pupenipavazugese.pdf
    • https://cdn.shopify.com/s/files/1/0440/4235/4853/files/bojeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/4599/4146/files/90192512273.pdf
    • https://cdn.shopify.com/s/files/1/0433/9181/1734/files/unconscious_bias_training_materials.pdf
    • https://cdn.shopify.com/s/files/1/0429/3296/1443/files/94748536744.pdf
    • https://cdn.shopify.com/s/files/1/0429/2263/9527/files/pokemon_go_curveball_template.pdf
    • https://cdn.shopify.com/s/files/1/0431/0102/8503/files/29028673237.pdf
    • https://cdn.shopify.com/s/files/1/0435/3294/3519/files/9250136293.pdf
    • https://cdn.shopify.com/s/files/1/0440/8341/3142/files/47883401166.pdf
    • https://cdn.shopify.com/s/files/1/0437/0720/3739/files/goodbye_email_to_colleagues_on_last_working_day.pdf
    • https://cdn.shopify.com/s/files/1/0437/6874/2039/files/kalovorupo.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_off00005c7b.bin
de829354fcb61a154f90c7173461fc74e2494dc0acf630f00f01a7d20e7ccf23		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C7B 5068 bytes
font_01_sfnt_off00006dc7.bin
236679ad1092a90ce25ac34e4bd7400e7a640a4471f9fc9e9bfef1942fa70e8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC7 14168 bytes

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