Malicious PDF — malware analysis report

Static analysis result for SHA-256 264a9292d0b3b549…

MALICIOUS

PDF

65.9 KB Created: 2020-06-04 00:18:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 24580a0c7d5b8ff9b9e3282837dc5273 SHA-1: deaa8b487b35859f976b8389d684e6f413f6a069 SHA-256: 264a9292d0b3b54955eec60416c1f432ab75fbd36c0e520161cf76fd28be3b8a
96 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 to external URLs, many of which are structured as SEO-optimized PDF links. The document body contains text related to 'Jimmy Neutron' and the wkhtmltopdf tool, suggesting a lure to disguise the malicious intent. The primary goal appears to be directing users to a link farm of potentially malicious PDF files hosted on various domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 4

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://mx.cpuandmore.com/uploads/1/3/0/7/130740264/130740264.html#jimmy+neutron+win+lose+and+kaboom+ki
    • http://koozieorbust.com/uploads/1/3/1/4/131407465/tijuzeke_mepuligawa_dodexopino_fumiwanafaweter.pdf
    • http://parkcitydoulas.ca/uploads/1/3/1/4/131406269/kuguxuzoneva.pdf
    • http://oaklandempowermentscholarshipprogram.com/uploads/1/3/0/4/130483067/benedijemusisonaf.pdf
    • http://icycleni.com/uploads/1/3/0/2/130272804/7823957.pdf
    • http://havencounsellingedinburgh.com/uploads/1/3/0/8/130874509/1002702.pdf
    • http://74-123-77-193.mgwnet.com/uploads/1/3/0/5/130551559/9186123.pdf
    • http://campweempower.org/uploads/1/3/0/4/130435892/fobopapizop.pdf
    • http://vantweenaarvier.com/uploads/1/3/0/9/130969876/rikoranebed.pdf
    • http://integralwellness.com.au/uploads/1/3/0/5/130588627/8131423.pdf
    • http://grimsbyfishmanufacturing.com/uploads/1/3/0/7/130775760/9003204.pdf
    • http://flavorness.com/uploads/1/3/0/4/130476572/d08c48304a47.pdf
    • http://mx.cpuandmore.com/uploads/1/3/0/7/130740264/terms.html
    • http://mx.cpuandmore.com/uploads/1/3/0/7/130740264/dmca.html
    • http://mx.cpuandmore.com/uploads/1/3/0/7/130740264/policy.html
    • https://gavumafan.files.wordpress.com/2020/06/pujuvutexogodinemoxe.pdf
    • https://motonukem.files.wordpress.com/2020/06/26841687173.pdf
    • https://ziwuses.files.wordpress.com/2020/06/wuwamesubej.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_off0000d2fb.bin
e88e6aa5c2d124527ff0afe58fded55895700b0acb2cdcdd911a02d4b0eb464b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FB 12020 bytes

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