Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2b113cb43aa1fa2…

MALICIOUS

PDF

54.2 KB Created: 2020-08-31 02:50:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fb70836d95275d31816f3f6897d75f6 SHA-1: ebe2b9e744fcbfb22bef42d39f84eb11905db6c8 SHA-256: f2b113cb43aa1fa2af0a6d21a78efb7fdff619fe993b66aa5671f421b24b330f
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=wow+druid+follower+guide'. The document body also contains this URL, suggesting a lure to a potentially malicious site. The file is identified as a PDF and was generated by wkhtmltopdf, a tool often used to create PDFs from web content, which can be abused for malicious purposes. The presence of numerous external links, many pointing to benign content, suggests a link farm or SEO poisoning tactic to mask the malicious URL.

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/wix?keyword=wow+druid+follower+guide
    • https://static.usrfiles.com/ugd/e3ff21_f666dba01d63479c98a21992b8208024.pdf
    • https://static.usrfiles.com/ugd/9ea91e_434ac05dcd9c4068bb29c50115ed9b50.pdf
    • https://static.usrfiles.com/ugd/a31856_4dbfba7c54844f318e2f8095fc4bd098.pdf
    • https://cdn.shopify.com/s/files/1/0434/9421/1750/files/email_signature_template_for_company.pdf
    • https://cdn.shopify.com/s/files/1/0434/7687/7478/files/puxatedix.pdf
    • https://cdn.shopify.com/s/files/1/0430/8412/0225/files/neumonia_pediatria_fisiopatologia.pdf
    • https://cdn.shopify.com/s/files/1/0430/2117/2897/files/merced_county_jail_in_custody_report.pdf
    • https://cdn.shopify.com/s/files/1/0429/9345/1159/files/tetatapezofuralel.pdf
    • https://static.usrfiles.com/ugd/d1d005_2c16926522d64c0db1e2060dc6da2826.pdf
    • https://static.usrfiles.com/ugd/b8c837_0019bec7fe5d4706b2cf7941c50487ad.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_off00008b2f.bin
64c4b51f7ccb02f9a8d8d190456e234fde3976b0b8457b94d46b3377b128cfd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B2F 4488 bytes
font_01_sfnt_off00009a96.bin
068b32c26dec6e9e4ce0d92fcfcc17758e3e2a2ea54d8df47376b3adfad31475		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A96 10420 bytes
font_02_sfnt_off0000be30.bin
7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBE30 4324 bytes

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