Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6472643b288042c…

MALICIOUS

PDF

30.6 KB Created: 2020-08-19 16:38:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9fb49434ab667dc601987868ab1887e7 SHA-1: ec129ffe2f842979436dc1cd45fe70b91be9f6e4 SHA-256: e6472643b288042cc5315ce1705db4f5d93a4f285ff1faa0eb66d2405a4f0621
150 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One prominent link, 'https://ttraff.ru/pify?keyword=cg+video+dj++2018', is flagged as malicious. The document body contains garbled text but also includes the same malicious URL, suggesting an attempt to lure users to a potentially harmful site. The presence of many links, including the malicious one, strongly indicates a phishing or malware distribution attempt.

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=cg+video+dj++2018
    • http://files.truthfulart.com/uploads/1/3/0/7/130738971/8f93bde3b8330.pdf
    • https://cdn.shopify.com/s/files/1/0431/2249/1553/files/82619817080.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/puziniziwemafadisovo.pdf
    • https://cdn.shopify.com/s/files/1/0438/2910/0701/files/95633857135.pdf
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/water_pollution_in_marathi_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/7128/4135/files/rolonalulubinubo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/vupakofarumiwin.pdf
    • https://cdn.shopify.com/s/files/1/0430/3123/2674/files/volinepe.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2224/files/garolaxezasisubi.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_off00003d84.bin
0da5082972062d3f59bc8b99dbe94a0df1fcdca39fa4ed53d0a9df9d08fd8796		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3D84 5036 bytes
font_01_sfnt_off00004ed8.bin
8255110a33aa344a9530cdcdc8d743981ce396f27b39d1f964e45b476edc2de0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4ED8 9276 bytes

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