Malicious PDF — malware analysis report

Static analysis result for SHA-256 d90eddff7d86a17c…

MALICIOUS

PDF

44.4 KB Created: 2020-08-03 03:53:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e00a50f3eddc72eec07657b68899f874 SHA-1: 17a639c09c36a01d83aca05dad2ab3559b38c20d SHA-256: d90eddff7d86a17cdb00f3bc37d349737d5bfcc9ea926fc0818e9078a377eb4e
130 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with one prominent link pointing to a known malicious redirector. The document body text, though heavily obfuscated, contains the string 'Form it 2105' and the malicious URL, suggesting a lure to trick the user into clicking the link. The presence of numerous PDF links on benign-looking domains like shopify.com is a common tactic to disguise malicious redirectors.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=form+it+2105
    • http://files.carolinegriffiths.net/uploads/1/3/1/8/131856086/tajemiwob.pdf
    • http://files.eldertonymcgill.com/uploads/1/3/0/8/130874612/pelavonapabuto_merumudi.pdf
    • http://files.artofkundalini.com/uploads/1/3/0/8/130873783/dutij-fibanosekulup-bovurubupukuwim-pureto.pdf
    • http://files.turnsofphrase.com/uploads/1/3/1/0/131070678/0d24ced56.pdf
    • https://cdn.shopify.com/s/files/1/0430/2897/1674/files/11087927514.pdf
    • https://cdn.shopify.com/s/files/1/0429/5337/5897/files/32614569918.pdf
    • https://cdn.shopify.com/s/files/1/0434/5711/8374/files/starbucks_annual_report.pdf
    • https://cdn.shopify.com/s/files/1/0430/9054/2743/files/boseluwuxomomerizugem.pdf
    • https://cdn.shopify.com/s/files/1/0437/8846/8376/files/71583386728.pdf
    • https://cdn.shopify.com/s/files/1/0440/8606/7352/files/rijudijegum.pdf
    • https://cdn.shopify.com/s/files/1/0435/3910/3912/files/90821653702.pdf
    • https://cdn.shopify.com/s/files/1/0438/1619/0112/files/47220052213.pdf
    • https://cdn.shopify.com/s/files/1/0431/9064/8996/files/28933458063.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_off000067ee.bin
4f7c945a80076101b047f7666d40cea4f7ebe23b62afa267ed87bf8e55ed070c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67EE 4816 bytes
font_01_sfnt_off00007845.bin
3739e884ee91e0aecee79dcfd8e43f1597972adfa2b6383044ade9a911d64fc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7845 14480 bytes

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