Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9bd1c0b35ede627…

MALICIOUS

PDF

33.0 KB Created: 2020-08-23 13:03:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe68db1423edb7a0dfbc2c62fb7669f6 SHA-1: 17fbd220917a545a6aee36fa37ebb0fcdf132dcb SHA-256: d9bd1c0b35ede627c0de64d8d04a2a8b85adac84de6805d73ff9d0356fafd81d
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 Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning attempt. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is presented within the document body as a traffic report. This indicates the primary goal is to redirect the user to malicious infrastructure. 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.com/pify?keyword=i+10+houston+traffic+report
    • http://files.iwcobserver.org/uploads/1/3/0/8/130813526/rolijudugifepejemef.pdf
    • http://gudozig.northwestpermaculture.org/uploads/1/3/1/3/131379636/zubelitoragemen.pdf
    • http://genav.muraleedharanck.com/uploads/1/3/1/4/131483400/2e13730cd.pdf
    • https://cdn.shopify.com/s/files/1/0437/4170/8437/files/sasiserefopulobumigoziw.pdf
    • https://cdn.shopify.com/s/files/1/0433/7631/2471/files/kodugabidiwedazim.pdf
    • https://cdn.shopify.com/s/files/1/0459/6619/6903/files/95941430928.pdf
    • https://cdn.shopify.com/s/files/1/0433/4547/7800/files/attention_to_detail_test_examples.pdf
    • https://cdn.shopify.com/s/files/1/0448/0558/7106/files/batman_beyond_comic.pdf
    • https://cdn.shopify.com/s/files/1/0431/2891/4087/files/un_convention_on_biological_diversity_1992.pdf
    • https://cdn.shopify.com/s/files/1/0435/6256/5795/files/6362944484.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tuwupijisunuxavupo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6676/9058/files/vowaw.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_off00004443.bin
9e0eded634217eb399f11b5f1f287ec7843142fa09d01bb16d55e9c3e03aa015		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4443 5200 bytes
font_01_sfnt_off000055ea.bin
abb4a5f4aa2e936d91d9f6dc1dcd7ceb1b0b680b3b84cc11fa12d09d188d3f29		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55EA 9812 bytes

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