Malicious PDF — malware analysis report

Static analysis result for SHA-256 efad7aead720881e…

MALICIOUS

PDF

43.1 KB Created: 2020-03-09 01:18:26 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-08
MD5: 49d582b4f1aaa02d70762fcf75a5a1f5 SHA-1: 9693195fbbefca777da31fb9aacf86c51ea0d67b SHA-256: efad7aead720881e7e20f60a642f6f1447f79ebbe1476b40ea8ae9b559c6142a
96 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or distribution mechanism. The embedded document body text is largely unreadable, but the presence of numerous external URLs indicates a likely attempt to direct users to potentially malicious content or for SEO manipulation purposes. 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://wcd-khbyu3nv.mgh-r.ch/uploads/1/3/0/9/130969265/130969265.html#cardiac+action+potential+pdf PDF link annotation
    • http://oryxlaw.net/uploads/1/3/0/2/130272613/vumimex.pdfIn PDF document text
    • http://www.dongreys.com/uploads/1/3/0/2/130289632/ae804.pdfIn PDF document text
    • http://moonlumen.net/uploads/1/3/0/7/130739536/nadavalan_jaxorajetis.pdfIn PDF document text
    • http://lune-blanc.com/uploads/1/3/0/8/130874364/6438273.pdfIn PDF document text
    • http://mta-sts.mx.naturehouseaz.com/uploads/1/3/0/2/130288410/kirufub-lisoj.pdfIn PDF document text
    • http://ujfold.virtus.hu/uploads/1/3/0/7/130775392/banofevobimex-jodekoxeparik.pdfIn PDF document text
    • http://electricians-harrogate.com/uploads/1/3/0/5/130588720/debebd3306d669.pdfIn PDF document text
    • http://thewhitepartnership.com/uploads/1/3/0/4/130488114/teramokonoterow.pdfIn PDF document text
    • http://4201cookies.com/uploads/1/3/0/6/130620930/1169509.pdfIn PDF document text
    • http://rccrepresentacoes.com/uploads/1/3/0/7/130738966/6366198.pdfIn PDF document text
    • http://liveartstampabay.org/uploads/1/3/0/6/130603943/negemubotes_gozoreruduka.pdfIn PDF document text
    • http://masteringyourorgasm.com/uploads/1/3/0/2/130273845/441317.pdfIn PDF document text
    • http://o2oking.co/uploads/1/3/0/7/130740536/8862877.pdfIn PDF document text
    • http://musicclubgroup.com/uploads/1/3/0/6/130621481/8e0b1dbf30.pdfIn PDF document text
    • http://nrgcleaning.com/uploads/1/3/0/7/130775592/6388419.pdfIn PDF document text
    • http://omgradine.com/uploads/1/3/0/6/130621082/dcd62.pdfIn PDF document text
    • http://breakineggs.com/uploads/1/3/0/4/130435811/6217238.pdfIn PDF document text
    • http://threetwodesign.com/uploads/1/3/0/3/130313390/2e9a0e66b8.pdfIn PDF document text
    • http://minisheepadoodlepuppies.com/uploads/1/3/0/6/130639355/bevufel-burizadotov.pdfIn PDF document text
    • http://www.ironhorsewoodworks.com/uploads/1/3/0/6/130639199/7355402.pdfIn PDF document text
    • http://kintsukuroionlittlemountain.com/uploads/1/3/0/6/130639777/1a0733bdccec.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008097.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8097 7816 bytes
SHA-256: 4dbe362ef2c7ca59e3eefe5289b206a78063d5262bdfd1f5240fff449e95eaf5

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