Malicious PDF — malware analysis report

Static analysis result for SHA-256 c57a3ed939893a25…

MALICIOUS

PDF

44.6 KB Created: 2020-08-04 06:12:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dea196dcedda7722abef53f7d02f2a3 SHA-1: ccbbf961130c45e6a3af65e20c7c4524b137d72d SHA-256: c57a3ed939893a25dad3a0fc9823462a7021e27f18463ba227357a80dc0f78c5
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains, but one critical link redirects to a known malicious redirector. This indicates a link farm or SEO poisoning attack designed to lure users to malicious sites. The document body contains obfuscated text and the target URL, suggesting an attempt to disguise the malicious intent.

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=bernard+shaw+man+and+superman+pdf
    • http://files.mitsukoyoga.com/uploads/1/3/2/6/132681012/b9a1636.pdf
    • http://files.multidimensionalchromatography.com/uploads/1/3/1/3/131383650/1915314.pdf
    • http://files.lataca.co.uk/uploads/1/3/1/0/131069934/9190269.pdf
    • http://files.kristenjoanphotography.com/uploads/1/3/1/3/131398145/zanixuw-jofamop.pdf
    • https://cdn.shopify.com/s/files/1/0429/4954/2047/files/todojonawinekinalote.pdf
    • https://cdn.shopify.com/s/files/1/0428/6365/7119/files/sirokawede.pdf
    • https://cdn.shopify.com/s/files/1/0430/7740/2778/files/95655264816.pdf
    • https://cdn.shopify.com/s/files/1/0434/5993/6421/files/86827939081.pdf
    • https://cdn.shopify.com/s/files/1/0430/6350/9146/files/7146395340.pdf
    • https://cdn.shopify.com/s/files/1/0428/9275/5111/files/swing_trading_strategies.pdf
    • https://cdn.shopify.com/s/files/1/0431/4071/0566/files/minecraft_pe_id_list.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdf
    • https://cdn.shopify.com/s/files/1/0429/1526/6713/files/gerepodegewigazirupi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7995/8679/files/zimuxijewonab.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3945/files/tajutosilofibirasomixu.pdf
    • https://cdn.shopify.com/s/files/1/0440/3331/0870/files/dilubaxepulutifax.pdf
    • https://cdn.shopify.com/s/files/1/0431/7364/2406/files/watch_dogs_2_skidrow.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_off000070a5.bin
31a0c402e0877bffb5d63ca5a7163e0b7bc763484981d33356e254596a48db40		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A5 5388 bytes
font_01_sfnt_off000082e3.bin
ffeb3f0cce462cbe6cd902e7a8abf67cfd6ada194b1e02401287a4fb7d5c4d0f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82E3 9980 bytes

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