Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b0f8778873b9baa…

MALICIOUS

PDF

55.9 KB Created: 2020-08-15 01:14:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e8af66a948afec0645335f5fdc7f9d6 SHA-1: c67a47f699ebc56e65b0486680067e432b933644 SHA-256: 8b0f8778873b9baa7260ab3018886eeb05ae9cb6748e086838841746488de386
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded URLs, with a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Illustrator marketing templates' and the malicious URL, suggesting a lure. The presence of numerous other PDF links, many hosted on 'cdn.shopify.com', indicates a link farm strategy, likely to improve search engine ranking and distribute the malicious payload.

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.com/pify?keyword=illustrator+marketing+templates
    • http://pasalo.ppads.org/uploads/1/3/2/6/132695636/maripapipetab_polisex.pdf
    • https://cdn.shopify.com/s/files/1/0430/7861/5189/files/vebakowibefos.pdf
    • https://cdn.shopify.com/s/files/1/0428/4124/3814/files/kivuxofo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/97897646990.pdf
    • https://cdn.shopify.com/s/files/1/0430/6993/1671/files/66116213460.pdf
    • https://cdn.shopify.com/s/files/1/0436/2846/2233/files/javascript_seconds_to_time.pdf
    • https://cdn.shopify.com/s/files/1/0435/1947/5866/files/dnd_5e_artificer_revisited_guide.pdf
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/bodybuilding_vector_free.pdf
    • https://cdn.shopify.com/s/files/1/0440/2964/0854/files/pruebas_ser_bachiller_2020_resueltas.pdf
    • https://cdn.shopify.com/s/files/1/0431/1570/8573/files/nejufaz.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kexuxedixu.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_off00009f4b.bin
f76cd98a64a3c8ad3cb6a53dcbf1a7ea605fac4b1bf8ace9f8089289006b17d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9F4B 5140 bytes
font_01_sfnt_off0000b0ac.bin
453d466a63189c46f08a0ced1f9f20daf5b86b3a1da317d3681d77ca2f9f3cad		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0AC 9996 bytes

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