Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1a1bda8a5397fcd…

MALICIOUS

PDF

49.8 KB Created: 2020-03-20 04:47:50 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 74c0170f9a589671c7846fc69d262ef5 SHA-1: ce4ceb8ec74328ff603ddb7011714072a522d692 SHA-256: e1a1bda8a5397fcdb77713eb04087e9afc4a4fe6ca9a91b50be7bd578b986b15
96 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains, suggesting a link farm or redirection scheme. The primary URL found in the document body is http://nursingarmpillow.com/uploads/1/3/0/2/130273846/130273846.html#palabras+con+bat+al+principio, which is part of this larger pattern. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://nursingarmpillow.com/uploads/1/3/0/2/130273846/130273846.html#palabras+con+bat+al+principio PDF link annotation
    • http://ttob-hotels.com/uploads/1/3/0/3/130379711/dilozimox-sozulit.pdfIn PDF document text
    • http://starbeautique.com/uploads/1/3/0/3/130379638/lumukom-waputi-jonoru-zutobaj.pdfIn PDF document text
    • http://www.flowhealthandwellbeing.com.au/uploads/1/3/0/6/130604036/982682.pdfIn PDF document text
    • http://www.theicecreamman.net/uploads/1/3/0/7/130739945/2202274.pdfIn PDF document text
    • http://www.h-hys.com/uploads/1/3/0/8/130814534/3012f25cd3.pdfIn PDF document text
    • http://electricianfalkirk.com/uploads/1/3/0/5/130588787/6429318.pdfIn PDF document text
    • http://seaburg.org/uploads/1/3/0/7/130739204/9005872.pdfIn PDF document text
    • http://rockallyourrelationships.com/uploads/1/3/0/7/130775015/fadikem-mopololos-daliku-munulo.pdfIn PDF document text
    • http://learningent.org/uploads/1/3/0/4/130483739/3531263.pdfIn PDF document text
    • http://rockymountainresponse.com/uploads/1/3/0/8/130874266/88905e0e931d44.pdfIn PDF document text
    • http://hostmaster.apollokc.org.uk/uploads/1/3/0/6/130605133/gaxeku_numal_xusonosi.pdfIn PDF document text
    • http://mirrormirrorministries.com/uploads/1/3/0/5/130552016/vusoxatejote_zubizaje.pdfIn PDF document text
    • http://www.getabigbuttformen.com/uploads/1/3/0/3/130379429/jaxovupevaruzafup.pdfIn PDF document text
    • http://webografix.ca/uploads/1/3/0/5/130538950/kozifavapit-lawuvufuvodugof-panato-sibuju.pdfIn PDF document text
    • http://momstoybox.com/uploads/1/3/0/3/130379299/968658a.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009a28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A28 8512 bytes
SHA-256: 7baa3db2d72f47cab4482a76db4092f0d42ab37a061c417eb2be656dae1c8eb4