Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0ab308127c2b24…

MALICIOUS

PDF

42.4 KB Created: 2020-08-22 19:49:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ce939f36a4deb57c92b9038640a6e5b SHA-1: 3236085ef1aa0bfb69719451351caae57f70b4c4 SHA-256: eb0ab308127c2b2400897f6e86411a3d67abb93c9c797c5da29382484b4f844c
120 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains references to the redirector URL and a large number of other URLs hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning attempt. The presence of PDF-specific heuristics for malicious redirectors and link farms indicates a delivery mechanism designed to trick users into clicking through to malicious content.

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.cc/pify?keyword=cyanogenmod+12++for+oneplus+one
    • http://files.berwickranger.com/uploads/1/3/1/8/131871558/fotesulizux.pdf
    • http://files.mdsmeats.co.uk/uploads/1/3/0/7/130775659/e4427b8f7e9.pdf
    • http://taziwi.indoorcyclinginstitute.com/uploads/1/3/0/7/130776487/8960976.pdf
    • http://files.playsafeatthepavilion.co.uk/uploads/1/3/1/3/131398143/xilaralaminojag-weralipiga-nozovonopibevot.pdf
    • http://pojebije.epathlearning.net/uploads/1/3/1/4/131437919/98d07cd3.pdf
    • https://cdn.shopify.com/s/files/1/0435/6213/9816/files/arma_3_maps.pdf
    • https://cdn.shopify.com/s/files/1/0431/7285/5957/files/wizard101_mvp_v0._3.pdf
    • https://cdn.shopify.com/s/files/1/0433/7857/3464/files/33852769040.pdf
    • https://cdn.shopify.com/s/files/1/0447/2622/3001/files/basic_networking_concepts_ccna.pdf
    • https://cdn.shopify.com/s/files/1/0459/6288/7335/files/guzusoguxukevuduboji.pdf
    • https://cdn.shopify.com/s/files/1/0448/5634/4737/files/ancient_mesopotamian_religion.pdf
    • https://cdn.shopify.com/s/files/1/0429/7791/9129/files/58543261195.pdf
    • https://cdn.shopify.com/s/files/1/0430/5331/8298/files/sojupa.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bizem.pdf
    • https://cdn.shopify.com/s/files/1/0433/7880/2846/files/gopotezivebolan.pdf
    • https://cdn.shopify.com/s/files/1/0430/6924/3549/files/richard_thaler_behavioural_economics.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_off0000662b.bin
2a0ce19fdeff861182c59495832d1d6c7f416647f9c6c38088ffefb5cee6a8a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x662B 5552 bytes
font_01_sfnt_off00007909.bin
fa7899251dc0ddb77b6f35332bae9293599cec30f292e1ab1b8deba168d68467		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7909 10468 bytes

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