Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee6ba84c6157e424…

MALICIOUS

PDF

67.1 KB Created: 2020-08-12 02:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: abeb1f36f457707fb0f7723b89638f4c SHA-1: a4ec31b26e6c20b0b5d5f03f6f93bb0ffa5019ce SHA-256: ee6ba84c6157e4246ab297b61be8891503f372b3d82125d8b63bf4176bb86c3a
150 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the same URL. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting a spam or phishing campaign. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=l+animisme+en+afrique+pdf
    • http://files.thecountrymouseoflinton.com/uploads/1/3/1/3/131378838/2990228.pdf
    • http://files.baleupfeeders.com/uploads/1/3/0/8/130873895/7cb7fcd617dc9c.pdf
    • http://files.shoeflypublichouse.com/uploads/1/3/1/3/131380456/705094.pdf
    • http://rutolatip.fothergillmsmc.com/uploads/1/3/1/4/131406437/8eba0970.pdf
    • http://files.etbengineering.com/uploads/1/3/1/3/131398020/180bd46.pdf
    • https://cdn.shopify.com/s/files/1/0434/5951/0424/files/muromezuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/1338/9992/files/transport_phenomena_bird_stewart_lightfoot.pdf
    • https://cdn.shopify.com/s/files/1/0450/6884/5208/files/buxabinubi.pdf
    • https://cdn.shopify.com/s/files/1/0428/8679/1334/files/godemugirejibafudate.pdf
    • https://cdn.shopify.com/s/files/1/0430/6714/6397/files/daseli.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34292265756.pdf
    • https://cdn.shopify.com/s/files/1/0430/8546/3713/files/13176544072.pdf
    • https://cdn.shopify.com/s/files/1/0431/4628/1122/files/merujabaga.pdf
    • https://cdn.shopify.com/s/files/1/0432/6971/8172/files/raxomupubufa.pdf
    • https://cdn.shopify.com/s/files/1/0429/1988/7001/files/67571212696.pdf
    • https://cdn.shopify.com/s/files/1/0434/4715/6903/files/rekanofetojimovuwozamol.pdf
    • https://cdn.shopify.com/s/files/1/0435/2809/3850/files/velatimawo.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_off0000c3d4.bin
4f1c9d90d6db17b8f081507cc0e96c4f4b35068020eadf79d892d3ae25169931		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3D4 5224 bytes
font_01_sfnt_off0000d575.bin
d266565d5bd7ddfaa7e6b5ce92c0ba2a31d77020dc5c31765559fa7b02dd0338		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD575 13416 bytes

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