Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2fccfd06ded3ebb…

MALICIOUS

PDF

43.2 KB Created: 2020-08-17 13:59:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78858dbf7f32a1ee5f19343d30298ae9 SHA-1: 94ec93882c232dba1393526cdabc65982dde8e95 SHA-256: c2fccfd06ded3ebbb2160b37e73f8494dca37494b4a49a200533149537c3bea4
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 pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. This suggests the document is designed as a link farm to distribute traffic to malicious sites, likely for phishing or malware delivery. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of malicious intent.

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=r+markdown+html+cheat+sheet
    • http://files.treschicshopper.com/uploads/1/3/1/6/131606123/wivepeme.pdf
    • http://files.surelockedin.com/uploads/1/3/0/8/130814208/pokujimisobelol.pdf
    • http://files.faithandgrind.org/uploads/1/3/1/4/131437308/mubekulonaruju-zidukewezelo-buxiw-dofovetelemam.pdf
    • http://vepewu.rebekahlpurdy.com/uploads/1/3/0/9/130969723/6725903.pdf
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/tuturulunuraxegaxal.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mowelikuzamutaj.pdf
    • https://cdn.shopify.com/s/files/1/0431/4952/5149/files/99763134343.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89647405972.pdf
    • https://cdn.shopify.com/s/files/1/0431/7757/4562/files/katuzisosiziw.pdf
    • https://cdn.shopify.com/s/files/1/0430/1137/5267/files/73475837946.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7206/files/sukaniva.pdf
    • https://cdn.shopify.com/s/files/1/0439/3009/1688/files/ftc_buyers_guide.pdf
    • https://cdn.shopify.com/s/files/1/0430/8706/9348/files/tozopogenanis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9321/3852/files/schedule_plan_excel_template.pdf
    • https://cdn.shopify.com/s/files/1/0430/8959/2473/files/wirapivovataz.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_off00006763.bin
b9c9709796ae1614bd1a278c3a0c93fa14a8c5c22be5bc791b92e34b8408d615		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6763 5344 bytes
font_01_sfnt_off0000796e.bin
4ffaa46960dbc75d60c94d97c851b439cff7b057f543d7501eb74152d9a415d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x796E 11328 bytes

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