Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7fe2a9aac773145…

MALICIOUS

PDF

34.7 KB Created: 2020-09-19 10:25:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 566ddbd396f85dee54b6293a3b22eb51 SHA-1: 6240eb5383893fbd3c12a3f4fb094c2debd313c4 SHA-256: d7fe2a9aac77314583f7ace08647805a671e31a2f9cd518d05373494a0124f8f
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, appears to contain the same redirector URL and references to SEO-related content. The presence of numerous links, many pointing to Shopify, suggests a link farm or SEO spam tactic, with the primary redirector likely leading to a malicious payload or phishing page. No scripts were extracted, limiting the analysis of direct execution capabilities.

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=classify+rational+and+irrational+numbers+worksheet
    • https://cdn.shopify.com/s/files/1/0435/9448/1821/files/10233878214.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5682/files/aprendizajes_clave_sexto_grado.pdf
    • https://cdn.shopify.com/s/files/1/0432/6018/2692/files/joboxakefowejibobo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/12909571685.pdf
    • https://cdn.shopify.com/s/files/1/0428/8125/3535/files/24471502459.pdf
    • https://cdn.shopify.com/s/files/1/0437/2509/5062/files/waronetigepabekoxa.pdf
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/9835633531.pdf
    • https://cdn.shopify.com/s/files/1/0431/5450/5885/files/televulagifexeruxukesi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9538/3446/files/lapudimubazutizonofemuk.pdf
    • https://cdn.shopify.com/s/files/1/0431/1544/6423/files/blank_butterfly_meme_template.pdf
    • https://cdn.shopify.com/s/files/1/0465/3370/5887/files/fate_stay_night_android.pdf
    • https://cdn.shopify.com/s/files/1/0437/5108/0090/files/37495129615.pdf
    • https://cdn.shopify.com/s/files/1/0433/4262/6984/files/64283753721.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_off000049ca.bin
2527ebfb3cf7d4f7f80b68195355043e5f001523991bcfde306f536a67822cf1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x49CA 5448 bytes
font_01_sfnt_off00005c39.bin
e13266602c7c5bbf4b28f7009eb8174462cb09340bd75d4f65a976f49fa2f5aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C39 9840 bytes

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