Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2e4c046e2ec6852…

MALICIOUS

PDF

35.2 KB Created: 2020-08-11 00:32:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3dfab89350acd3dc615c279a9cabc241 SHA-1: 23ec84224059feec485d160f6cdf41b8ae5b77af SHA-256: d2e4c046e2ec6852fe29ba13dcdf8ea60c2ad7a1cb43563bc4e6a701589a8212
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 text, though corrupted, includes the URL 'https://ttraff.com/pify?keyword=stochastic+calculus+for+finance+pdf', suggesting a lure to disguise malicious activity as a document download. No scripts were extracted from this sample.

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=stochastic+calculus+for+finance+pdf
    • http://files.justmichiganmade.net/uploads/1/3/1/3/131380480/fexone.pdf
    • http://files.meadowlakecatholicchurch.com/uploads/1/3/0/8/130874513/e077c123.pdf
    • http://saxajewos.piloted.org/uploads/1/3/1/4/131453990/7892925.pdf
    • http://files.auscamfreedomproject.org/uploads/1/3/1/4/131437530/domejafofovafi_ratewefutu_remavixoxufinuk.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53741046047.pdf
    • https://cdn.shopify.com/s/files/1/0429/3600/8870/files/xopotuxipajazaxopunep.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3847/files/deweputililirope.pdf
    • https://cdn.shopify.com/s/files/1/0432/1037/5325/files/18858867360.pdf
    • https://cdn.shopify.com/s/files/1/0438/6809/4629/files/66731684237.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4996/files/waduxefifiposubuwokafuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0420/files/xuxulan.pdf
    • https://cdn.shopify.com/s/files/1/0440/5365/9798/files/93443236409.pdf
    • https://cdn.shopify.com/s/files/1/0432/1342/2753/files/45107029062.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_off00004e6e.bin
893e0d79df89bdba2972bd273143d9b192c478fdd9d572fdb095282566e8af2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E6E 5344 bytes
font_01_sfnt_off00006082.bin
9685863919d2960d78c024681390d41a55e7fa580da4d3a73af011cefffbac9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6082 9272 bytes

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