Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2cde5a1bb8ea77c…

MALICIOUS

PDF

39.7 KB Created: 2020-04-22 13:16:33 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4662836e38e77ef42bc2afbf9fd818e5 SHA-1: 672db3a231053601e46634d35c5946b8b369d1fc SHA-256: f2cde5a1bb8ea77c0b08e88ebe66c097fb9508bf5402663f973532943b72f6a2
62 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which point to seemingly unrelated PDF files hosted on various domains. The document body text, though heavily obfuscated, contains the string 'Drp test report template', suggesting a lure. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links generated for SEO purposes, likely to distribute malicious content or traffic. The primary IOC is the first external URI found, which also appears in the document body.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://porchswinghomes.net/uploads/1/3/0/4/130488861/130488861.html#drp+test+report+template
    • http://titangumshields.com/uploads/1/3/0/2/130271048/mepitaxas-jaxazogigutebeg-jadexuv-ludajew.pdf
    • http://bsmfarms.com/uploads/1/3/0/4/130489358/mukegaparezi_rodujemij_genaxav.pdf
    • http://schoolangel.org/uploads/1/3/1/4/131437924/dexag.pdf
    • http://dierauszeitler.de/uploads/1/3/1/6/131637038/turawilokejewibarof.pdf
    • http://coloradosocial.us/uploads/1/3/1/4/131408008/919808.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000074ca.bin
bc4949de0379a531f98b03499a6816bf4724fdf55d0984dc73551007db56f832		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74CA 7540 bytes

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