Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee2d4d39895cbca0…

MALICIOUS

PDF

48.1 KB Created: 2020-08-07 02:54:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2beb0cf14681fe028e6875f929b2e0c1 SHA-1: 6ab47eb7dcaac58eaa6642343da7749b2de27a28 SHA-256: ee2d4d39895cbca028469689113f19f9b0ff149c224a3d28b0cda9640b9dc67d
130 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on Shopify. One of these links, 'https://ttraff.ru/pify?keyword=aflatoxin+in+maize+pdf', is identified as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to redirect the user to malicious infrastructure. No scripts were extracted from this sample.

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.ru/pify?keyword=aflatoxin+in+maize+pdf
    • http://files.peaceelc.com/uploads/1/3/0/7/130776368/zoxasofikogupital.pdf
    • http://files.hlfmgoats.com/uploads/1/3/1/3/131383553/jopaxubesoz.pdf
    • http://files.eosmithfoundation.org/uploads/1/3/1/8/131872054/9199586.pdf
    • https://cdn.shopify.com/s/files/1/0434/2834/8056/files/11128115073.pdf
    • https://cdn.shopify.com/s/files/1/0432/4127/5547/files/rufap.pdf
    • https://cdn.shopify.com/s/files/1/0431/2789/8268/files/56725302952.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/1503834141.pdf
    • https://cdn.shopify.com/s/files/1/0427/7154/6279/files/85113322506.pdf
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/java_vs_kotlin.pdf
    • https://cdn.shopify.com/s/files/1/0435/7554/1919/files/tarascon_emergency_medicine.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/9638252875.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/84302935330.pdf
    • https://cdn.shopify.com/s/files/1/0434/8408/6424/files/kujudajige.pdf
    • https://cdn.shopify.com/s/files/1/0435/9982/3016/files/83139801425.pdf
    • https://cdn.shopify.com/s/files/1/0430/5672/6170/files/tekatabutukegegepudiv.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_off00007ea6.bin
9c116dc1005f51b117556ab316fa8bb5170aff9a808b8fb9ab4ab8b3b94a47f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA6 5020 bytes
font_01_sfnt_off00008fc0.bin
a1b99dfd416af34a321770cad5a14ff987725ddf3a8c7974314d0e50011d9cc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FC0 10464 bytes

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