Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd34298f32d42979…

MALICIOUS

PDF

39.5 KB Created: 2020-08-11 12:49:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 79ceae45d507f1376c65247fb12a8e89 SHA-1: 0b9163db50b6cdf5611fae79ef623c2adcab4c4e SHA-256: bd34298f32d429798958b68a070d3a87ed18b388c7ce71140080dd0e40cb8fc1
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain, ttraff.com. This suggests a link farm or SEO poisoning tactic to distribute malicious content. The document body, though heavily obfuscated, contains the URL that triggers the malicious redirector, indicating the primary intent is to lure users to malicious infrastructure.

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=statistical+learning+springer+pdf
    • http://files.dopenailz.com/uploads/1/3/2/7/132741382/e780055.pdf
    • http://files.niosha.com/uploads/1/3/2/6/132682338/6298497.pdf
    • http://mabos.yourmasjidyusufshah.com/uploads/1/3/1/0/131070374/f4a963fd.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nadogenomaxijedunebenez.pdf
    • https://cdn.shopify.com/s/files/1/0436/1525/6738/files/60065424115.pdf
    • https://cdn.shopify.com/s/files/1/0437/5461/9041/files/la_politique_definition.pdf
    • https://cdn.shopify.com/s/files/1/0439/7016/6942/files/jizekotera.pdf
    • https://cdn.shopify.com/s/files/1/0437/9761/0657/files/jurowimawofu.pdf
    • https://cdn.shopify.com/s/files/1/0439/0679/3627/files/73660873382.pdf
    • https://cdn.shopify.com/s/files/1/0434/9270/4408/files/loudon_organic_chemistry_6th_edition_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/tadosakiwometabu.pdf
    • https://cdn.shopify.com/s/files/1/0427/4615/1078/files/vitilufejirupomoseduge.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/84885437304.pdf
    • https://cdn.shopify.com/s/files/1/0428/6762/2055/files/gedojo.pdf
    • https://cdn.shopify.com/s/files/1/0435/6522/0003/files/43307847165.pdf
    • https://cdn.shopify.com/s/files/1/0447/9365/9543/files/99693774704.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_off00005cc0.bin
a92c73baab3b38fe5e38effe1efa33cb55e07ff84cf1e480d602d1ecba469f6d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC0 5424 bytes
font_01_sfnt_off00006f29.bin
0684260c13ac73fc5f9139a5677b0e648e5cadf3b66a1e6ce3450fcd5769616e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F29 9896 bytes

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