Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9a937d3cc976e01…

MALICIOUS

PDF

36.0 KB Created: 2020-04-01 12:41:36 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 3c66150593fe3d88d30dbcaa696ebd7f SHA-1: f6b3314d0fe77462aa24057097abf5b14610362e SHA-256: b9a937d3cc976e01e4b062659494e4964868065144cbbccbb5f467732467a2d0
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a large number of external links to other PDF files hosted on various domains. This pattern is indicative of SEO poisoning or a link farm designed to distribute malicious content or redirect users to phishing sites. No scripts were extracted, and the document body is heavily obfuscated, making it difficult to determine the exact lure or payload. The primary attack vector appears to be the distribution of malicious links.

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://aixent.biz/uploads/1/3/0/4/130478760/130478760.html#google+earth+not+google+earth+pro
    • http://letthemshine.net/uploads/1/3/0/9/130969264/moboweki.pdf
    • http://risinglightmedia.com/uploads/1/3/0/6/130622011/matoxapiripitan_tutebowobapev.pdf
    • http://taigachristie.net/uploads/1/3/0/5/130551477/tunulos.pdf
    • http://mercysolidarite.org/uploads/1/3/0/6/130621123/7ab998720159721.pdf
    • http://bryantruckingcompany.com/uploads/1/3/0/5/130588778/6038833.pdf
    • http://jvmaisc.com/uploads/1/3/0/8/130874077/lavivitoziz.pdf
    • http://magenta-capital.com/uploads/1/3/0/8/130813413/kuwisukewixe-rilalolabewi-xoxuzoxemaw-veziw.pdf
    • http://barefootcottageswellsbeach.com/uploads/1/3/0/4/130489830/41614.pdf
    • http://diligentdiamond.com/uploads/1/3/0/7/130775282/zonuzidebep-wanojavowifed.pdf
    • http://murchxday.com/uploads/1/3/0/3/130379696/cdd8318f4d759.pdf
    • http://stgeorgecountrydancing.com/uploads/1/3/0/5/130540246/0e7db26551.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_off000064ee.bin
030cc972b2f1de7e3b700083e4438d087be37fbf57905fd02936fe9fcf192159		 pdf-font-stream PDF embedded font (sfnt) at offset 0x64EE 8004 bytes

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