Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9f7461d51025f5d…

MALICIOUS

PDF

57.4 KB Created: 2020-08-08 01:55:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 965c2a80fca985e41cdf3663c72257f3 SHA-1: d8f12116a0b2adf2a928ae98941e1bee8955b7ee SHA-256: e9f7461d51025f5df13f12f1548f0a4ffb271c44fd27aaa726e8781625ce3f8b
120 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a redirector at 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure for users to download a PDF. The presence of numerous external PDF links, many pointing to Shopify domains, indicates a link farm strategy to improve search engine ranking for the 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=catholic+mass+readings+2020+book+pdf
    • http://files.bettingonasecondchance.com/uploads/1/3/1/4/131411474/5374328.pdf
    • http://files.drewhooverphotography.drewhoover.com/uploads/1/3/0/9/130968988/gojorobexevikos-bigop-demazotivimiwos.pdf
    • http://files.twobentspokes.com/uploads/1/3/1/3/131398059/6ec2ee6790fb8d.pdf
    • https://cdn.shopify.com/s/files/1/0437/4849/1425/files/balance_of_payment_theory_of_exchange_rate.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dotalufakelani.pdf
    • https://cdn.shopify.com/s/files/1/0431/1983/7345/files/zagadasinugukizewoganulet.pdf
    • https://cdn.shopify.com/s/files/1/0437/2529/1674/files/78664790912.pdf
    • https://cdn.shopify.com/s/files/1/0434/4116/0344/files/basic_calculus_grade_11_curriculum_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/9963/5355/files/kojasowidusakodopoleli.pdf
    • https://cdn.shopify.com/s/files/1/0434/6114/8832/files/convert_balance_sheet_to_excel.pdf
    • https://cdn.shopify.com/s/files/1/0432/1234/1416/files/88943894129.pdf
    • https://cdn.shopify.com/s/files/1/0432/0467/3699/files/legamewujamukefozop.pdf
    • https://cdn.shopify.com/s/files/1/0439/0407/3880/files/76470120820.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xibazukikamemawamiwemin.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3627/files/66664626923.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_off0000a049.bin
de4fc1425380d87bdad8b44468473672a587de9d997b580171cdde77f4a60dbe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA049 5952 bytes
font_01_sfnt_off0000b455.bin
cfa1b8207d064862a8939094e127653fd4cf10746250e654e713f75dd8b1cd69		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB455 10600 bytes

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