Malicious PDF — malware analysis report

Static analysis result for SHA-256 9598edf7d944b364…

MALICIOUS

PDF

38.3 KB Created: 2020-08-15 18:46:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5aacc5d9e8057120bf273f598bad466b SHA-1: e26884d3c1880552bcf2ad8866669c0978ec7397 SHA-256: 9598edf7d944b36446579f94eee70552f8d35a27d1f580e1b079a867dabeb098
120 Risk Score

Malware Insights

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

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.ru'. The document body, though heavily obfuscated, contains the same malicious URL, suggesting the primary intent is to redirect the user to potentially harmful content. The heuristic firings confirm the presence of a malicious redirector and a link farm, indicating a phishing or malware distribution attempt.

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/pify?keyword=kinematics+in+two+dimensions+worksheet
    • http://files.themastectomystore.com/uploads/1/3/2/6/132682607/gofapapeg_sapukagimakoj_jijok.pdf
    • http://files.bronwyndohertyart.com/uploads/1/3/0/7/130738531/bukajuwedukegen.pdf
    • https://cdn.shopify.com/s/files/1/0432/1358/6600/files/13736571691.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/54764935339.pdf
    • https://cdn.shopify.com/s/files/1/0430/9853/8151/files/aadhar_card_form_download_gujarat.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/96422769130.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6156/files/44122026782.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3429/files/90717414148.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7570/files/10441417809.pdf
    • https://cdn.shopify.com/s/files/1/0436/2862/6080/files/datulizuwapejagasejoj.pdf
    • https://cdn.shopify.com/s/files/1/0435/6908/6623/files/wapaxixujixuzu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40035930655.pdf
    • https://cdn.shopify.com/s/files/1/0434/6888/2072/files/gasigamu.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/62964099277.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69296453687.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_off000057d4.bin
aee985723a1baf08ce675ab4df55835aaa08afde24968c088e039014b780277a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57D4 5272 bytes
font_01_sfnt_off00006993.bin
fb1a85e076bfd53eba70b29d4de4ebdf086ed594ccd7cdc3969223377da56b21		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6993 10168 bytes

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