Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1e51c4088e17de1…

MALICIOUS

PDF

43.8 KB Created: 2020-08-08 19:44:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94923bd4f8029286f7b8ac4786f00ac2 SHA-1: 3adc5612bb89c9254c10cf321fb0e4e227450b65 SHA-256: a1e51c4088e17de1847fe1c0c7db7c5766ba92d55f50910538f3e9665f42be6c
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a specific malicious redirector URL disguised as a document about catfish farming. The primary malicious URL is https://ttraff.cc/pify?keyword=feasibility+study+on+catfish+farming+in+nigeria+pdf, which likely leads to further malicious content. The document body, though heavily obfuscated, contains references to the document title and the malicious URL, 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.cc/pify?keyword=feasibility+study+on+catfish+farming+in+nigeria+pdf
    • http://jugavox.beadsbraidsknots.co.uk/uploads/1/3/1/4/131409090/womagufoge-ketetenubumor-rojimogip-towivo.pdf
    • http://files.ebikeco.com/uploads/1/3/1/6/131607075/466379.pdf
    • http://files.patriciasplacecatholicgiftshop.com/uploads/1/3/2/6/132695321/lanunefebazol.pdf
    • https://cdn.shopify.com/s/files/1/0431/6659/7288/files/90723084391.pdf
    • https://cdn.shopify.com/s/files/1/0433/2270/4030/files/62589601635.pdf
    • https://cdn.shopify.com/s/files/1/0428/6460/7398/files/cd_action_1999.pdf
    • https://cdn.shopify.com/s/files/1/0430/0279/0039/files/gudonuliz.pdf
    • https://cdn.shopify.com/s/files/1/0436/0686/8126/files/teoria_del_liberalismo_economico.pdf
    • https://cdn.shopify.com/s/files/1/0428/2076/3804/files/64300390429.pdf
    • https://cdn.shopify.com/s/files/1/0428/4638/8380/files/67585701398.pdf
    • https://cdn.shopify.com/s/files/1/0430/3667/2162/files/46457747182.pdf
    • https://cdn.shopify.com/s/files/1/0433/8312/8214/files/29497107134.pdf
    • https://cdn.shopify.com/s/files/1/0433/1828/0357/files/34650792561.pdf
    • https://cdn.shopify.com/s/files/1/0430/3526/3138/files/8773416687.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6312/files/tasaxiromakumi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6762/2055/files/44872097886.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_off00006b4a.bin
a47282ae695d8bba237f87201aa7ef198697353ba96e609b72d7455632337c1b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4A 5764 bytes
font_01_sfnt_off00007ecc.bin
6ec8451e5aae77058e5b254e5ada1215c26a76b58e8d4dc10f29303310e9c67b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ECC 10444 bytes

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