Malicious PDF — malware analysis report

Static analysis result for SHA-256 c428f7a321e57830…

MALICIOUS

PDF

40.9 KB Created: 2020-08-14 13:44:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6800cfa2d3acc60ef4403315e7242dc7 SHA-1: 33338ec92db4e27510e52050e5b49ca7836ff203 SHA-256: c428f7a321e5783043c5ce549f57415b95cc467769c2df8645385bfb731ff5b6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The document body, though partially corrupted, suggests a lure related to 'Australian drinking water guidelines summary'. The primary heuristic indicates the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.ru/pify?keyword=australian+drinking+water+guidelines+summary'. This suggests the document is designed to lead users to malicious content through a link farm strategy.

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=australian+drinking+water+guidelines+summary
    • http://files.lucytherescuedog.org/uploads/1/3/1/4/131408502/21d1d72aec262.pdf
    • http://files.firstaidcomicstaylor.com/uploads/1/3/1/1/131163858/387445367.pdf
    • http://zujov.thecutesyndrome.com/uploads/1/3/1/4/131408100/5b078eb6.pdf
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/zinenusunalax.pdf
    • https://cdn.shopify.com/s/files/1/0438/2218/6656/files/kinds_of_adverbs_worksheets_for_grade_4.pdf
    • https://cdn.shopify.com/s/files/1/0431/3874/4476/files/wonezanifenufavori.pdf
    • https://cdn.shopify.com/s/files/1/0438/2133/4690/files/67788341183.pdf
    • https://cdn.shopify.com/s/files/1/0450/5842/4995/files/cable_gland_explosion_proof.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8349/files/32580246848.pdf
    • https://cdn.shopify.com/s/files/1/0435/8776/4387/files/regression_analysis_by_example_chatterjee.pdf
    • https://cdn.shopify.com/s/files/1/0434/8536/4390/files/35303037631.pdf
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/kagawepad.pdf
    • https://cdn.shopify.com/s/files/1/0435/5981/3279/files/zinetax.pdf
    • https://cdn.shopify.com/s/files/1/0429/6956/3290/files/taxogiz.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_off0000572a.bin
8a767c5b838e62740a4b8ca7241918e957839dd437e470550217a60673fe39a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x572A 5164 bytes
font_01_sfnt_off000068a7.bin
31e2da95b2d61a865259ea86f9df48733b00be2a768a804ed7ada0411dcbd8c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68A7 9364 bytes
font_02_sfnt_off00008868.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8868 4324 bytes

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