Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0502a5cb731272b…

MALICIOUS

PDF

36.6 KB Created: 2020-05-15 07:43:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-09-04
MD5: 9764ec0ffadcccc450f789411b405c1d SHA-1: 0f7e514b2ecd1e328469e80053d0b7a0964dc10a SHA-256: d0502a5cb731272bc1b63dba38e7ee9c4abb6f5721577367e1526d1f0e27d9da
96 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting it functions as a link farm. The ML classifier also strongly indicated maliciousness. The embedded URLs likely lead to further malicious content or phishing sites, contributing to the overall malicious intent of the document.

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://spectrumherniaclinic.com/uploads/1/3/0/2/130272616/130272616.html#eric+andre+memes+template PDF link annotation
    • http://dubairhythmicgymnastics.com/uploads/1/3/1/4/131406676/vidarazodoxifaw.pdfIn PDF document text
    • http://jessicalgervaisbooks.com/uploads/1/3/1/4/131409508/simizalusaba.pdfIn PDF document text
    • http://lairsonlab.com/uploads/1/3/0/6/130603859/mobilanunezu_pafek.pdfIn PDF document text
    • http://wellingtonjwatches.com/uploads/1/3/1/1/131164066/8844658.pdfIn PDF document text
    • http://sbcam.net/uploads/1/3/0/4/130489563/sekivedagubu.pdfIn PDF document text
    • http://biblicalhope.org/uploads/1/3/0/2/130288762/6504754.pdfIn PDF document text
    • http://randyscottgonzalez.com/uploads/1/3/0/5/130551342/89f4390.pdfIn PDF document text
    • http://iteach.photography/uploads/1/3/1/3/131398288/tisux.pdfIn PDF document text
    • http://djsamara.com/uploads/1/3/0/7/130739688/bazil-fokoge-veputikigoj.pdfIn PDF document text
    • http://mariumnurvahed.ca/uploads/1/3/1/4/131438345/0b3991d.pdfIn PDF document text
    • http://abortionoman.com/uploads/1/3/0/5/130543798/nesefopuv_muwazusafud.pdfIn PDF document text
    • http://createandcaptureswfl.com/uploads/1/3/1/0/131070771/712c8fe949e9c.pdfIn PDF document text
    • http://adrianherrera.net/uploads/1/3/1/4/131454262/4941767.pdfIn PDF document text
    • http://danisnannies.com/uploads/1/3/0/9/130969097/zezerinixavugeroli.pdfIn PDF document text
    • http://oscrisoarepierduta.com/uploads/1/3/0/6/130639236/a5cda.pdfIn PDF document text
    • http://livingchocolate.ca/uploads/1/3/1/4/131438309/nalit-febumo-kamemuvi.pdfIn PDF document text
    • http://loveofwrinkles.com/uploads/1/3/1/8/131871516/6767723.pdfIn PDF document text
    • http://weeblee.net/uploads/1/3/0/8/130874109/donutiniradev.pdfIn PDF document text
    • http://optimalutilitylimited.com/uploads/1/3/1/1/131163834/1208399.pdfIn PDF document text
    • http://greenapedesign.com/uploads/1/3/0/5/130590583/bupewaxabusuborofot.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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
    • http://scripts.sil.org/OFLIn 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_off000062b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62B5 10536 bytes
SHA-256: 12da352dd8ad9bab7adb074aced9a3c9cfe2473bbf81e3f953ea3d9cf328e444

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