Malicious PDF — malware analysis report

Static analysis result for SHA-256 89b4d8cdd7ea2b58…

MALICIOUS

PDF

33.1 KB Created: 2020-09-01 02:45:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72a539343a6373963976b845b1de2216 SHA-1: ffb98b8058baddffb00d38992ad480ee68db280f SHA-256: 89b4d8cdd7ea2b5846475cd624ac655f72f09c843f7aef5a43204f2a48cc01cd
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wix?keyword=amablesser+gqom+remix', which is flagged as malicious. The presence of numerous PDF links, many pointing to Shopify, suggests a link farm or a deceptive lure. No scripts were extracted from this sample.

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=amablesser+gqom+remix
    • https://cdn.shopify.com/s/files/1/0435/7770/4607/files/aqeedah_al_wasitiyyah.pdf
    • https://cdn.shopify.com/s/files/1/0431/0528/8352/files/27174823838.pdf
    • https://cdn.shopify.com/s/files/1/0428/0002/1667/files/bargaining_theory_with_applications_muthoo.pdf
    • https://cdn.shopify.com/s/files/1/0431/7095/5415/files/runisewuti.pdf
    • https://cdn.shopify.com/s/files/1/0428/0808/2599/files/48364727848.pdf
    • https://cdn.shopify.com/s/files/1/0438/3699/7782/files/62276212664.pdf
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/regafuwijaxuvotufa.pdf
    • https://cdn.shopify.com/s/files/1/0429/7788/6367/files/buramu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6294/2101/files/zezatidesa.pdf
    • https://cdn.shopify.com/s/files/1/0439/1839/3499/files/wijefijikowig.pdf
    • https://cdn.shopify.com/s/files/1/0434/7772/9432/files/64633323606.pdf
    • https://cdn.shopify.com/s/files/1/0435/3631/8616/files/datoxemepobulivaloxev.pdf
    • https://cdn.shopify.com/s/files/1/0433/9191/0038/files/precalculus_textbook_answers_pearson.pdf
    • https://cdn.shopify.com/s/files/1/0434/2317/0710/files/iowa_quit_claim_deed_template.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_off000044ea.bin
0cfaae7ef0ba5da8267a7b739c3b0eb0c39d48dc81089fa8676486200fbf5edc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x44EA 5328 bytes
font_01_sfnt_off000056ed.bin
7ed361c81018681d865797803ff4f7b1479a10719670bcb2b9d34eb2e2f7d32b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56ED 9620 bytes

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