Malicious PDF — malware analysis report

Static analysis result for SHA-256 b18b8fde9adc1f07…

MALICIOUS

PDF

40.6 KB Created: 2020-08-08 14:43:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 427a2dfc070fce4724a24eb568c50a98 SHA-1: 22afd0f03f91c9ae066a1394cadcc0d7234295be SHA-256: b18b8fde9adc1f078ecb9e76f39ce2a02b0c3c63797782758b94d3e4936b1768
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to 'Great Expectations' and includes the malicious URL. The presence of numerous external links, many pointing to Shopify domains, suggests a link farm or SEO poisoning tactic to distribute the malicious content. The primary malicious URL is https://ttraff.com/pify?keyword=great+expectations+oxford+bookworms+pdf.

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=great+expectations+oxford+bookworms+pdf
    • http://files.handyshop-traiskirchen.com/uploads/1/3/1/6/131607407/lopubuxi.pdf
    • http://files.hitthatjuice.com/uploads/1/3/2/6/132695416/9938c6a2dfffca.pdf
    • http://files.nationalconstructionsafetyexecutives.org/uploads/1/3/1/3/131379894/bakudajijina.pdf
    • http://files.ticklemysenses.net/uploads/1/3/1/8/131856907/pufamafufuz.pdf
    • https://cdn.shopify.com/s/files/1/0431/5676/6882/files/50780857268.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wevanedinuwisuvajolow.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72593533024.pdf
    • https://cdn.shopify.com/s/files/1/0432/3514/7933/files/20905595699.pdf
    • https://cdn.shopify.com/s/files/1/0430/6190/3517/files/30513036001.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/11667706435.pdf
    • https://cdn.shopify.com/s/files/1/0429/2647/3375/files/47488384.pdf
    • https://cdn.shopify.com/s/files/1/0428/7302/8775/files/sepewasonodojozupuxi.pdf
    • https://cdn.shopify.com/s/files/1/0430/9814/4932/files/vevoresilirusizuwuwunub.pdf
    • https://cdn.shopify.com/s/files/1/0429/9577/7699/files/35065675342.pdf
    • https://cdn.shopify.com/s/files/1/0429/8702/8641/files/funozikow.pdf
    • https://cdn.shopify.com/s/files/1/0427/5005/0460/files/pdf_to_word_converter_free_download_adobe.pdf
    • https://cdn.shopify.com/s/files/1/0432/5192/5155/files/toxifowefugabejafikifux.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vibamiwa.pdf
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/webozavuxobozesupokuk.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/
    • https://cdn.shopify.com/s/files/1/0440/7810/4728/files/webozavuxobozesup

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059a9.bin
b97d80ef43d0c68fe9049d8157faaf54e2f6699c368b3047b2af447090de4a41
pdf-font-stream PDF embedded font (sfnt) at offset 0x59A9 5664 bytes
font_01_sfnt_off00006cf1.bin
a24f08a345a2cba6ee02ceb7b7034b21ba1220aa17a331cbddce5e9f3e70f5f9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF1 13572 bytes