Malicious PDF — malware analysis report

Static analysis result for SHA-256 5352b687cd3c75fa…

MALICIOUS

PDF

53.2 KB Created: 2020-09-05 02:13:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 416c9bc583ccdce1769f28be6029409f SHA-1: 7e182c865b40aad618dd08f99d303b59b0387d03 SHA-256: 5352b687cd3c75fa1b05af744339e67f97feb7034cd1b4fda2b5843963bf11d4
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.link/wix?keyword=arcaea+apk+all+songs'. This URL is presented within the document body, suggesting a lure to download potentially malicious content. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify. The primary malicious URL is the most critical IOC.

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.link/wix?keyword=arcaea+apk+all+songs
    • https://cdn.shopify.com/s/files/1/0439/3887/3512/files/jasper_report_example_java_code.pdf
    • https://cdn.shopify.com/s/files/1/0463/2395/7920/files/29144740442.pdf
    • https://cdn.shopify.com/s/files/1/0434/2120/4631/files/sejolijetawetapalixinuza.pdf
    • https://cdn.shopify.com/s/files/1/0428/7840/2723/files/liberalization_in_education.pdf
    • https://cdn.shopify.com/s/files/1/0440/3937/2965/files/44741785166.pdf
    • https://cdn.shopify.com/s/files/1/0435/0260/0356/files/vizujumunotozexiderebix.pdf
    • https://cdn.shopify.com/s/files/1/0428/9862/0569/files/12919095202.pdf
    • https://cdn.shopify.com/s/files/1/0435/0305/9110/files/tuvedu.pdf
    • https://cdn.shopify.com/s/files/1/0450/0806/0574/files/quantitative_data_analysis_process.pdf
    • https://cdn.shopify.com/s/files/1/0432/2436/7266/files/pizikepabe.pdf
    • https://cdn.shopify.com/s/files/1/0437/0546/7035/files/moxupopudiwijikoxitatekat.pdf
    • https://cdn.shopify.com/s/files/1/0438/3938/9856/files/asus_brightness_driver.pdf
    • https://cdn.shopify.com/s/files/1/0435/3871/0696/files/40139018342.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_off0000915d.bin
3c1eab62e474f0bbc58da803c3e5af155e87ca655a51352aa6feafc8c7e091e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x915D 5156 bytes
font_01_sfnt_off0000a2fb.bin
3599ec8baff3e31d6c35664308b9eee78555162beb63868e07da8c616fca3c67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA2FB 10932 bytes

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