Malicious PDF — malware analysis report

Static analysis result for SHA-256 520e4eda84e00ea5…

MALICIOUS

PDF

42.6 KB Created: 2020-08-22 15:29:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6a189c8bef10e6eb4db46ba6c67a1bf3 SHA-1: 629f75f42745e9d529f520216f782cca0eeb0035 SHA-256: 520e4eda84e00ea5c46864862c3b43ab32c8012e50cb24b88a3d2268b55ac654
120 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic identified a link to a known malicious redirector, ttraff.com, which is used to obscure the final destination. The document body, though heavily corrupted, contains text related to 'Pokemon alpha sapphire 3ds rom citra' and the redirector URL, indicating a lure to a potentially malicious site.

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=pokemon+alpha+sapphire+3ds+rom++citra
    • http://files.al-aidc.org/uploads/1/3/1/4/131483275/66e389ea.pdf
    • http://wuzor.lilianholm.com/uploads/1/3/1/3/131381045/8421934.pdf
    • http://files.wreckingmachine.net/uploads/1/3/2/7/132740997/fefuju.pdf
    • http://rototetuv.mtcarmelshrine.com/uploads/1/3/2/7/132740324/a86a493befd.pdf
    • https://cdn.shopify.com/s/files/1/0433/0940/0214/files/53873128394.pdf
    • https://cdn.shopify.com/s/files/1/0429/5180/3033/files/34295961569.pdf
    • https://cdn.shopify.com/s/files/1/0434/0128/1701/files/64869307452.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6654/files/geretugovije.pdf
    • https://cdn.shopify.com/s/files/1/0435/8042/4351/files/basic_life_support_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/5622/6716/files/kopidejujipa.pdf
    • https://cdn.shopify.com/s/files/1/0437/5802/6901/files/vomeminixeluxepexuli.pdf
    • https://cdn.shopify.com/s/files/1/0437/4141/3527/files/adform_kiemelis_rekvizitai.pdf
    • https://cdn.shopify.com/s/files/1/0431/0879/4530/files/85165593822.pdf
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/nifofirefujolaza.pdf
    • https://cdn.shopify.com/s/files/1/0433/7506/7297/files/52362243418.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_off00005a28.bin
48d25c2e95d33aeb80bf9ad112f99144d36df5956c86d22ffcf88b23fa245cf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A28 5540 bytes
font_01_sfnt_off00006cca.bin
3ed651bc66dc6b593c34377d03acaf728dea3aac27a5187a82e021210b376dd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CCA 14936 bytes

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