Malicious PDF — malware analysis report

Static analysis result for SHA-256 f84278b14f96ced4…

MALICIOUS

PDF

41.6 KB Created: 2020-08-21 03:46:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e1414026cdf9f47b9fde69d81b5f841 SHA-1: 512d702e6eff4a95af63dfe93e5738365d496e4b SHA-256: f84278b14f96ced43a8cb2efa9a06ae8c1b13344465799b46e5670c28ad4432d
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 pointing to a known malicious redirector. The document body is heavily obfuscated but contains references to the redirector URL and numerous other PDF links hosted on Shopify. This suggests a tactic to distribute malicious content or manipulate search engine results.

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=css+form+submit+button+color
    • http://burib.designdome.net/uploads/1/3/0/8/130813528/jonabevorufet.pdf
    • http://files.whipcityshields.com/uploads/1/3/1/4/131483249/pekujoresunodas.pdf
    • http://files.virginiadunn.com/uploads/1/3/1/4/131453623/8905940.pdf
    • http://masizewuw.akblouisville.com/uploads/1/3/0/8/130873982/nesalizigevemevakiji.pdf
    • http://files.manchesterartistsbookfair.com/uploads/1/3/1/4/131406701/jexoras-ruzibagedo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6921/0773/files/wipisizenenen.pdf
    • https://cdn.shopify.com/s/files/1/0438/1753/3597/files/edgar_alan_poe_libros.pdf
    • https://cdn.shopify.com/s/files/1/0433/4161/1159/files/11627484955.pdf
    • https://cdn.shopify.com/s/files/1/0430/9352/4637/files/87675040718.pdf
    • https://cdn.shopify.com/s/files/1/0432/2423/6199/files/libros_kabbalah_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69262577592.pdf
    • https://cdn.shopify.com/s/files/1/0430/7009/5521/files/4080941377.pdf
    • https://cdn.shopify.com/s/files/1/0434/6334/4280/files/14879433553.pdf
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/25740472721.pdf
    • https://cdn.shopify.com/s/files/1/0431/8648/7455/files/18062049666.pdf
    • https://cdn.shopify.com/s/files/1/0438/9850/3336/files/legugalexamuga.pdf
    • https://cdn.shopify.com/s/files/1/0462/4809/9991/files/relative_frequency_and_experimental_probability_worksheet.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_off0000657e.bin
52f956628062ace87e4cc2e0adad215a339dab769066c5059aa102a157cf4c7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x657E 4864 bytes
font_01_sfnt_off000075f5.bin
4e66dc5b5b7cba7c34b15431eecbc461c6982a77882c399db62a0529cc871033		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75F5 10488 bytes

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