Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8045951eff94aa9…

MALICIOUS

PDF

42.1 KB Created: 2020-08-02 19:11:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 50b386e42d592b3bd293199d2f5a5148 SHA-1: d1dc71dacdb241dcd658f0faea7191cbb2bf061a SHA-256: b8045951eff94aa9b48b216b6defa233e12921caa327b27447bbd9feddfc0ab1
120 Risk Score

Malware Insights

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

The PDF contains a high number of embedded 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 'free game resources' and the malicious URL, suggesting a lure to a malicious site. The presence of a malicious redirector indicates an attempt to deliver further malicious content or phishing pages.

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=free+game+resources
    • http://files.pathofthepilots.com/uploads/1/3/2/6/132683463/3075195.pdf
    • http://files.theredleafpractice.com/uploads/1/3/2/8/132815220/nonozunajabegubum.pdf
    • http://files.mrsfrenchhistory.com/uploads/1/3/0/8/130874266/6845583.pdf
    • http://files.phasephotonics.com/uploads/1/3/0/7/130739024/8f3f2b35a036.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kesazemoluvumexon.pdf
    • https://cdn.shopify.com/s/files/1/0428/2354/9094/files/felewenuriwuxexuvikelu.pdf
    • https://cdn.shopify.com/s/files/1/0429/0845/0972/files/33036509839.pdf
    • https://cdn.shopify.com/s/files/1/0440/1764/7766/files/47328296495.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/pmbok_8th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4864/0418/files/21009281460.pdf
    • https://cdn.shopify.com/s/files/1/0432/0083/9837/files/gekinexizufej.pdf
    • https://cdn.shopify.com/s/files/1/0431/3376/3746/files/react_link_to_another_page.pdf
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/kutameludazavofinavog.pdf
    • https://cdn.shopify.com/s/files/1/0434/5800/3096/files/62913460923.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_off00006898.bin
581efc0f2cb22bded3e50ebc19d1530fc1ce9d3d1886c3f9ce994436fb9c6a0b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6898 5044 bytes
font_01_sfnt_off000079af.bin
3f1429e51eb0d36bdc1b33bd90dddf19266e55a0239336d363a2114c1d6e1ccc
pdf-font-stream PDF embedded font (sfnt) at offset 0x79AF 10024 bytes