Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea5e389159441e8d…

MALICIOUS

PDF

61.0 KB Created: 2020-08-09 14:31:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 995e0f304300688690d3a57076f71b4a SHA-1: 5bd1eedaf044a53e79a36f1bf32a0691beec59a0 SHA-256: ea5e389159441e8d7f74452e7990bed73593f996cf32db978c113d1265191f95
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the target URL. This suggests the PDF is designed to trick users into clicking malicious links, likely to download further malware.

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.ru/pify?keyword=coca+cola+brand+identity+manual+pdf
    • http://files.hoopspulse.com/uploads/1/3/0/8/130874567/242e668027db9c.pdf
    • http://zegakipi.centerpointcomprehensiveplan.com/uploads/1/3/1/4/131437462/689f0fe98123.pdf
    • http://files.dassiedahan-author.com/uploads/1/3/1/4/131436971/wixodasa.pdf
    • http://files.mastersextoys.com/uploads/1/3/2/6/132682585/sofebusobefeg-ponukiwofopum.pdf
    • http://files.wingecarribeehealthassociationformen.org/uploads/1/3/1/4/131452838/lapeberejekex.pdf
    • https://cdn.shopify.com/s/files/1/0431/9857/8848/files/zemivimenuworasiru.pdf
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/pijinotesas.pdf
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/belt_fastened_quivers.pdf
    • https://cdn.shopify.com/s/files/1/0431/4228/3432/files/zisopazipudegexewine.pdf
    • https://cdn.shopify.com/s/files/1/0429/0553/4620/files/rawaxepukopef.pdf
    • https://cdn.shopify.com/s/files/1/0448/2105/3600/files/wirelumamolumat.pdf
    • https://cdn.shopify.com/s/files/1/0439/4234/6907/files/55071602269.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2184/files/dasubulute.pdf
    • https://cdn.shopify.com/s/files/1/0439/0024/0024/files/nutrition_during_pregnancy.pdf
    • https://cdn.shopify.com/s/files/1/0431/7023/4519/files/73960666288.pdf
    • https://cdn.shopify.com/s/files/1/0437/7768/7701/files/rinowagefolivufojej.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_off0000a222.bin
c983fdd82b66b472326bd128c28758360561068e41737d2737e005354d4595a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA222 5268 bytes
font_01_sfnt_off0000b3f7.bin
a332acf3e02039222103426e10211d667806f8f803c1034049f0f1d9467a9593		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB3F7 15732 bytes

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