Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc7f56e9f247c55…

MALICIOUS

PDF

37.8 KB Created: 2020-08-20 07:04:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b86bbef2a4c54288050086aaca5fd21 SHA-1: 28c4b055509df7c88eb153fdf3183979dbabc95e SHA-256: fcc7f56e9f247c558c964f1bcf910162ff4fefff9623a177cbf2ecf9c91c423c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm with 13 external PDF links, many hosted on Shopify, and one critical heuristic firing indicates a link to a known malicious redirector. The document body itself is heavily obfuscated and contains the redirector URL, suggesting it's a lure to a malicious site. 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.com/pify?keyword=lagu+blue+bird+free
    • http://files.empirefitness.us/uploads/1/3/1/4/131438245/f99e400683.pdf
    • https://cdn.shopify.com/s/files/1/0432/8564/3419/files/91874179005.pdf
    • https://cdn.shopify.com/s/files/1/0431/2409/7191/files/34609230852.pdf
    • https://cdn.shopify.com/s/files/1/0437/6179/5230/files/6170868881.pdf
    • https://cdn.shopify.com/s/files/1/0429/2047/6828/files/43403311308.pdf
    • https://cdn.shopify.com/s/files/1/0429/8083/5482/files/cells_and_organelles_worksheet_science_spot.pdf
    • https://cdn.shopify.com/s/files/1/0429/2519/5427/files/purchase_agreement_addendum.pdf
    • https://cdn.shopify.com/s/files/1/0440/7685/9557/files/english_sentences_with_tamil_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0439/1878/6728/files/48349697816.pdf
    • https://cdn.shopify.com/s/files/1/0431/1256/2849/files/classzone_spanish_2_home_tutor_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/5109/6991/files/h1z1_user_options.pdf
    • https://cdn.shopify.com/s/files/1/0433/1552/7833/files/pivorewejukamavor.pdf
    • https://cdn.shopify.com/s/files/1/0434/5459/5224/files/21710613653.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c6e.bin
e211f2d6e0d1bf1fd17bd5150bc2724fb7c0f1d37b1c69b855d9dcad8de34ab0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C6E 2952 bytes
font_01_sfnt_off000056fc.bin
f03c1faf7d08d0c6a1e73f982c989a9eb24f263147a788acf9fcd41c9176391f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56FC 4976 bytes
font_02_sfnt_off000067f6.bin
d2d27cc8263cde6f7e4bb96fe9242d9808caf8225d4c270ab9ff7a10601fdd7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67F6 10060 bytes

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