Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5703be84fb6178a…

MALICIOUS

PDF

97.2 KB Created: 2020-08-12 11:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 592ab68e7fc9368052b10cd4067c87e2 SHA-1: 48e8b92ed0fd9e8a77a20741ef1894d3e7cf7dca SHA-256: e5703be84fb6178a33d0e4b8e7036e49c1c24a1549c41d8fdbab0afbdc6373bc
128 Risk Score

Malware Insights

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

The PDF contains a lure for a 'kensuke's kingdom book pdf download' which redirects to a malicious URL. The PDF also contains a large number of links to other PDFs hosted on shopify.com, likely for SEO manipulation to improve search engine ranking for the malicious link. The document body is heavily obfuscated but contains the malicious URL.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/wb?keyword=kensuke
    • http://files.arewordinglife.com/uploads/1/3/0/7/130739155/fifazewej_nokuda_kimib_wajemiw.pdf
    • http://files.indysuzukiacademy.org/uploads/1/3/2/6/132682806/wopesifasa.pdf
    • http://files.professorwillis.com/uploads/1/3/0/9/130969819/3536095.pdf
    • http://files.naturaleclecticism.com/uploads/1/3/1/4/131437243/pibedafinafup_xugabatuliguga_sogaxozodoka_warodiresu.pdf
    • https://cdn.shopify.com/s/files/1/0429/2627/6774/files/chromatography_ppt.pdf
    • https://cdn.shopify.com/s/files/1/0428/3963/8179/files/85000268545.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/22177748647.pdf
    • https://cdn.shopify.com/s/files/1/0436/6794/7673/files/ford_econoline_camper.pdf
    • https://cdn.shopify.com/s/files/1/0433/7529/6670/files/bivotodesegebawokapixova.pdf
    • https://cdn.shopify.com/s/files/1/0438/0668/7394/files/calligrammes_apollinaire.pdf
    • https://cdn.shopify.com/s/files/1/0429/5612/8412/files/tesapiwiwerajagakujagaje.pdf
    • https://cdn.shopify.com/s/files/1/0432/0441/1556/files/ladasazurax.pdf
    • https://cdn.shopify.com/s/files/1/0433/9105/8083/files/where_to_mail_form_944.pdf
    • https://cdn.shopify.com/s/files/1/0434/6439/2866/files/bonodovevej.pdf
    • https://cdn.shopify.com/s/files/1/0428/6690/1148/files/76152672208.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_off00014138.bin
c4108fd1d6d2ed6f7221212996191cc823eb10270400e4970afe37f0cc3086b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14138 5564 bytes
font_01_sfnt_off0001542e.bin
5e726e8e1aedf7063eb4b37e67cb3835f08da877d40391049221be6ac92deaaa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1542E 10196 bytes

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