Malicious PDF — malware analysis report

Static analysis result for SHA-256 90bf520a43341961…

MALICIOUS

PDF

36.6 KB Created: 2020-07-30 14:02:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 80a358649b3d127c2e18f84077e26679 SHA-1: 6b6f0d1a1a2228cbe04544e759316ca132cdf3c1 SHA-256: 90bf520a433419618a3c61b9f055ba24d9684a0a05ad3196927df6a7c8df726f
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains hosting other PDF files, which is characteristic of a link farm. One of the primary links redirects to a known malicious redirector, suggesting an attempt to distribute malware or phishing content. The document body, though heavily obfuscated, contains text related to downloading a PDF, reinforcing the lure.

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/pify?keyword=livro+da+lei+aleister+crowley+pdf+download
    • http://files.stmichaelsworkington.org/uploads/1/3/1/3/131381112/seket.pdf
    • http://files.gc-cp.org/uploads/1/3/0/7/130739379/5090331.pdf
    • http://files.cybersecurityinc.net/uploads/1/3/2/6/132681938/natuwafegaga.pdf
    • http://files.brandonmoorecomposition.com/uploads/1/3/1/4/131438766/muxigem.pdf
    • http://files.brandonmoorecomposition.com/uploads/1/3/1/4/131438766/muxigem
    • https://cdn.shopify.com/s/files/1/0432/7872/9374/files/xegagami.pdf
    • https://cdn.shopify.com/s/files/1/0431/2950/3908/files/dabufudaxivo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/komidegekasorezi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1172/6750/files/92677566390.pdf
    • https://cdn.shopify.com/s/files/1/0437/3171/4202/files/sujofulusebevozevajusare.pdf
    • https://cdn.shopify.com/s/files/1/0434/4954/8966/files/75634521734.pdf
    • https://cdn.shopify.com/s/files/1/0435/5401/3336/files/libaradolurolizipojunu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8657/7828/files/xivovonikofinulapuku.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/86477918810.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_off00005315.bin
30f30c7fb6e15a07f11aecf2dd663a68a6213e08905b90532303b5b7816c2024		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5315 5132 bytes
font_01_sfnt_off000064b6.bin
8d0411a48bd221453d55e219bb7b58fa6d907ec4eda00d33b2600f5726dafd32		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64B6 9560 bytes

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