Malicious PDF — malware analysis report

Static analysis result for SHA-256 b786d0136213e231…

MALICIOUS

PDF

40.0 KB Created: 2020-08-29 17:01:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3be3c73a2c4b26d3731e4afd727641ef SHA-1: fcbaa4917785062c305318654255e97cb1f53d12 SHA-256: b786d0136213e2310eed77e38365a572b64226d7d8b266031498322e1c99a356
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to malicious infrastructure. The document body, though heavily obfuscated, contains text suggesting a lure related to 'one system care license key' and includes the malicious URL. Additionally, a PDF_SEO_LINK_FARM heuristic indicates the presence of numerous external links, with the first being to a Shopify domain. The primary malicious URL is ttraff.ru, which is flagged as a redirector.

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/wix?keyword=one+system+care+license+key
    • https://cdn.shopify.com/s/files/1/0431/3638/5175/files/jipifasema.pdf
    • https://cdn.shopify.com/s/files/1/0428/3544/3875/files/witepomanaluxibimo.pdf
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/92944276032.pdf
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/91173506911.pdf
    • https://cdn.shopify.com/s/files/1/0437/0048/6312/files/first_conditional_imperative_exercis.pdf
    • https://cdn.shopify.com/s/files/1/0427/5293/4044/files/lusurodokaxunegewizorewif.pdf
    • https://cdn.shopify.com/s/files/1/0438/7579/5099/files/5967278590.pdf
    • https://static.usrfiles.com/ugd/b8c837_b4b93246178f46e9b081eaf22ff6d379.pdf
    • https://static.usrfiles.com/ugd/b8c837_e3eed76385524d2680b120440fff8d88.pdf
    • https://static.usrfiles.com/ugd/b8c837_5fdb7d79bdff4ada8e030df7de01ffe3.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_off00006087.bin
79fd01665091d885b2d4cc5a50aa392acdb5c953c38485d129b9fcad44c23031		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6087 5140 bytes
font_01_sfnt_off000071ee.bin
b25fc549ff7e424fd5a5d0058e014b8fb488c527da3b1e304da1ed6a96b9b5b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71EE 9864 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.