Malicious PDF — malware analysis report

Static analysis result for SHA-256 859de4def6129c80…

MALICIOUS

PDF

40.8 KB Created: 2020-08-11 14:04:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f80e11961d70b07d842615555d77249 SHA-1: 1985637d5ced656dc2ebbae7b7c8a1105a16279b SHA-256: 859de4def6129c80b37ca70c433e8ec1999bf71edb80afd9e29dcde2d16bb3a6
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links, however, directs to a known malicious redirector at 'ttraff.ru'. This suggests the document is designed to lead users to malicious infrastructure, likely for phishing or to download further malware. 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.ru/pify?keyword=autodesk+vex+robotics+curriculum+pdf
    • http://rizab.8suitcases.com/uploads/1/3/0/8/130874359/fomewuwabo.pdf
    • http://tijovola.theachoostics.com/uploads/1/3/2/8/132814975/9399705.pdf
    • http://files.blackfiligreeco.com/uploads/1/3/1/3/131397946/pizage.pdf
    • https://cdn.shopify.com/s/files/1/0431/2937/2832/files/49323028040.pdf
    • https://cdn.shopify.com/s/files/1/0438/4564/8546/files/29823031812.pdf
    • https://cdn.shopify.com/s/files/1/0437/7555/7793/files/7120155743.pdf
    • https://cdn.shopify.com/s/files/1/0430/1104/7575/files/14666214415.pdf
    • https://cdn.shopify.com/s/files/1/0440/0611/3430/files/rudagorowovivu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1337/3084/files/dusurijaku.pdf
    • https://cdn.shopify.com/s/files/1/0438/3693/2253/files/14501623771.pdf
    • https://cdn.shopify.com/s/files/1/0449/0631/5943/files/business_proposal_example.pdf
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/kanole.pdf
    • https://cdn.shopify.com/s/files/1/0431/1403/7409/files/metro_map_pink_line.pdf
    • https://cdn.shopify.com/s/files/1/0437/7850/6909/files/zelujupedobizope.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_off00005fc8.bin
1cc0a665326d41ddf62df7d11ba5a1f207901e78c7aa82727fe52c7faa596ff9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC8 5412 bytes
font_01_sfnt_off00007221.bin
f7413229c11b630f3c7566e17647dffd5c4e1d4c4c71da88ab78d4cc0867acfe		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7221 10704 bytes

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