Malicious PDF — malware analysis report

Static analysis result for SHA-256 296fe079d9237770…

MALICIOUS

PDF

36.3 KB Created: 2020-07-27 23:49:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b95e5f6acda83045dbfdc7e23e3c8a3c SHA-1: 818d5f9e7e0e3ca1de72cb10d0ce51cc7c559993 SHA-256: 296fe079d9237770efbdfcc78a1d0993bbcb939e8f78ac6037148bb21ef5b96b
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large number of external links, indicating a link farm. The primary malicious URL identified is ttraff.ru, which is known for redirecting to malicious content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous links points towards a distribution mechanism for further malicious activity.

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=spray+bottle+vector+free
    • http://files.sacredselfsacredsource.com/uploads/1/3/1/3/131379719/8084297.pdf
    • http://files.artsmedicineforhopeandhealing.com/uploads/1/3/1/3/131381540/2561279.pdf
    • http://files.solowfest.com/uploads/1/3/0/7/130738576/4d56a92b.pdf
    • https://cdn.shopify.com/s/files/1/0434/1340/5850/files/81043544322.pdf
    • https://cdn.shopify.com/s/files/1/0429/5449/0012/files/19663676701.pdf
    • https://cdn.shopify.com/s/files/1/0436/5497/1557/files/23172180667.pdf
    • https://cdn.shopify.com/s/files/1/0433/2843/8427/files/8461993410.pdf
    • https://cdn.shopify.com/s/files/1/0431/1102/2756/files/26087694497.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/nedag.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/66174975334.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/jelaja.pdf
    • https://cdn.shopify.com/s/files/1/0427/6381/3020/files/22571922024.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/70462940316.pdf
    • https://cdn.shopify.com/s/files/1/0431/4398/7357/files/56608631824.pdf
    • https://cdn.shopify.com/s/files/1/0441/3738/2040/files/xuxatunotizaroretebe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/jidagakesuze.pdf
    • https://cdn.shopify.com/s/files/1/0429/0697/6422/files/bukedudeb.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/
    • https://cdn.shopify.com/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000550b.bin
4d03a2f59e70b2b7a750a178ba97dc0055a8aabde1af64ba2fcf5f37ca268c6e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x550B 4868 bytes
font_01_sfnt_off000065b4.bin
3fa66376ffa9794b969ce96cb127945992c643b21cdeaec2889ee8932f6af3b7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65B4 9008 bytes

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