Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4c90fc6158ee0b0…

MALICIOUS

PDF

35.6 KB Created: 2020-04-09 13:56:10 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 84cb196345f875430914ff0ecb91a3e5 SHA-1: af7f35c59bfd5555c2e46e47210cc17548dd47c0 SHA-256: d4c90fc6158ee0b0504d0f06fb5029294aeaa06426ff95eeb58b23e1aefb5e50
62 Risk Score

Malware Insights

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

The PDF file contains a significant number of external links, identified as a PDF link farm. The primary purpose appears to be SEO manipulation or directing users to a large number of other PDF documents hosted across various domains. No scripts were extracted, and the document body is largely unreadable binary data, limiting further analysis of specific malicious intent beyond the link farm behavior.

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://gomriz.com/uploads/1/3/0/8/130814642/130814642.html#legal+and+ethical+decision+making+model+in+nursing
    • http://biblebasedmedicine.net/uploads/1/3/1/3/131384185/fudafopalasawovoran.pdf
    • http://ferenbach.com/uploads/1/3/1/0/131071129/lenuxeno.pdf
    • http://kaffination.com/uploads/1/3/0/6/130620797/polidinose.pdf
    • http://mscminc.net/uploads/1/3/1/3/131383594/6987502.pdf
    • http://dynamicalleadership.com/uploads/1/3/0/9/130969343/b272847d3d.pdf
    • http://theogglamshack.com/uploads/1/3/0/7/130775734/fafugewasa-mesumutopele-titumonadasarox-zuzetem.pdf
    • http://uprisingbakery.com/uploads/1/3/0/8/130814003/5987712.pdf
    • http://smithstudio.ca/uploads/1/3/0/7/130739509/zitinizuda.pdf
    • http://palmettostarbbq.com/uploads/1/3/0/6/130604320/bekubizopumokoluv.pdf
    • http://handmadecardsforyou.com/uploads/1/3/0/6/130604791/sedet.pdf
    • http://64bar1.com/uploads/1/3/0/6/130604048/nevukudonajetaw.pdf
    • http://staywildoutdoors.ca/uploads/1/3/0/6/130620327/tulol_fozajekasewako_kafize_mekutokumiz.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_off0000644a.bin
ba59b6a2b24cfd0909f179f9e8167313b3136e10e4186bd94ac99d2dc29eb96e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x644A 7436 bytes

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