Malicious PDF — malware analysis report

Static analysis result for SHA-256 9606673c91e624bc…

MALICIOUS

PDF

48.4 KB Created: 2020-08-04 21:58:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 516e5c901a8324c9374365f37426c0b5 SHA-1: bfb0e18cd6f1aabfcfcb293ab66df345c552866b SHA-256: 9606673c91e624bca254ccb729503c2132fb4cb25c47d798200e9547168cb589
120 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 a redirector service. The document body, though heavily obfuscated, contains text related to 'Rscit admission form 2020 pdf' and includes the malicious URL. This suggests the document is designed to trick users into clicking the malicious link, likely leading to further compromise.

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.cc/pify?keyword=rscit+admission+form+2020+pdf
    • http://files.materializingthebible.com/uploads/1/3/0/9/130969545/6727123.pdf
    • http://kudare.brsanz.com/uploads/1/3/1/3/131380345/7335ad9.pdf
    • http://files.talbertsmaplefarm.com/uploads/1/3/1/0/131070688/19985d6.pdf
    • http://files.sandyfarms.com/uploads/1/3/1/3/131383588/zaruse.pdf
    • http://files.greenmountaingrills.co.uk/uploads/1/3/0/8/130813888/wofozojarobome.pdf
    • https://cdn.shopify.com/s/files/1/0431/5024/6054/files/masuzuwiposan.pdf
    • https://cdn.shopify.com/s/files/1/0431/9599/0175/files/27078518368.pdf
    • https://cdn.shopify.com/s/files/1/0434/0806/4677/files/31193036428.pdf
    • https://cdn.shopify.com/s/files/1/0438/4397/7366/files/22541628119.pdf
    • https://cdn.shopify.com/s/files/1/0429/2539/2035/files/tuzevurololigatevifopebu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4981/files/5478805418.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/gafopogewaka.pdf
    • https://cdn.shopify.com/s/files/1/0440/6899/5224/files/the_abandoned_empress_novel.pdf
    • https://cdn.shopify.com/s/files/1/0428/3373/9932/files/jokigorutu.pdf
    • https://cdn.shopify.com/s/files/1/0436/1424/0931/files/ajax_and_jquery_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0435/3222/2615/files/rabi_ribi_irisu.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_off00007697.bin
fbbb48a5eec346d62a845850f080bf6f468a968c76d4ce446d44f89d3a144015		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7697 5552 bytes
font_01_sfnt_off00008964.bin
c05d8a6aaaf4dbfa9e9e89ff86f0020f93c276fdc3d364a3ed79937b34643924		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8964 14004 bytes

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