Malicious PDF — malware analysis report

Static analysis result for SHA-256 d52278a3b0bb6640…

MALICIOUS

PDF

50.5 KB Created: 2020-08-06 04:24:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5024aa71e8aa2e928734199733320359 SHA-1: be8ae76bb7404c57340c120f116b63e9a85a15df SHA-256: d52278a3b0bb6640c1b347b9450bc4521c9afafc6f3c2e25d565623814a684ae
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 directs to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Blogging for dummies free pdf' and the malicious URL, suggesting a lure to download a fake PDF. The presence of numerous links and the redirector indicate a link farm or SEO poisoning attack designed to drive traffic to malicious sites.

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.cc/pify?keyword=blogging+for+dummies+free+pdf
    • http://files.plantopartyorlando.com/uploads/1/3/1/8/131856545/jofagewijasabi.pdf
    • http://files.kimonocha.com/uploads/1/3/0/9/130969791/lutulewiganoge-vujexegopuvo.pdf
    • http://files.aplyon.com/uploads/1/3/0/7/130775195/5356404.pdf
    • https://cdn.shopify.com/s/files/1/0441/0084/5720/files/jofivutosuzalur.pdf
    • https://cdn.shopify.com/s/files/1/0429/5625/9491/files/mesezu.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/63042858682.pdf
    • https://cdn.shopify.com/s/files/1/0431/6508/9941/files/30428229446.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/bexukatinazolomokolam.pdf
    • https://cdn.shopify.com/s/files/1/0428/5438/3782/files/46473707051.pdf
    • https://cdn.shopify.com/s/files/1/0439/3569/5016/files/60835748264.pdf
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/26621444506.pdf
    • https://cdn.shopify.com/s/files/1/0432/3311/6315/files/2869148427.pdf
    • https://cdn.shopify.com/s/files/1/0433/7870/4536/files/98122891600.pdf
    • https://cdn.shopify.com/s/files/1/0430/1763/3945/files/nemewore.pdf
    • https://cdn.shopify.com/s/files/1/0431/1325/0965/files/55768756178.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_off00008794.bin
c711ab4d8186a0f4b5bf9a8864395a310573f34338d3641e04650cd84b69be6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8794 5200 bytes
font_01_sfnt_off0000993d.bin
2e0ec828f9131a4b44eef1f919cca7dae1986f97cc25749a68e9cc27b24a3d2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x993D 10552 bytes

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