Malicious PDF — malware analysis report

Static analysis result for SHA-256 4544700246590885…

MALICIOUS

PDF

41.0 KB Created: 2020-03-15 06:16:37 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2020-09-24
MD5: 8dcc2833806927a1b024766670a3c13c SHA-1: 8dd27a7456a50a4487018bc98fa46e88bf38fd8c SHA-256: 454470024659088514c9b0df99a3738fb2ae56e1a1676663e7559c4e7a7898f2
96 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, a technique often used for SEO poisoning or to redirect users to malicious sites. The document body, though partially corrupted, contains text related to a 'nurse practitioner job description', suggesting a lure to entice users to click on the embedded URLs. The primary URL identified is http://74-123-77-221.mgwnet.com/uploads/1/3/0/5/130588714/130588714.html#nurse+practitioner+job+description+pdf, which likely leads to a phishing page or a further malware download.

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://74-123-77-221.mgwnet.com/uploads/1/3/0/5/130588714/130588714.html#nurse+practitioner+job+description+pdf PDF link annotation
    • http://lebaraparfum.net/uploads/1/3/0/7/130776246/zuwogawoj-dilimo-zusaza-nebavipe.pdfIn PDF document text
    • http://www.georgiaeyesmusic.com/uploads/1/3/0/7/130739930/712b4.pdfIn PDF document text
    • http://www.photography-cap.com/uploads/1/3/0/6/130640200/runolebozo_juxevajuna_gubajipixatiz.pdfIn PDF document text
    • http://newchancedetox.com/uploads/1/3/0/6/130620909/pobukuxidexa_bavogevaned.pdfIn PDF document text
    • http://musicforsoho.com/uploads/1/3/0/5/130588377/9489ced39.pdfIn PDF document text
    • http://www.library.marten-bg.eu/uploads/1/3/0/5/130543569/26b3d.pdfIn PDF document text
    • http://wonderful-yoga.com/uploads/1/3/0/4/130436152/bb0874.pdfIn PDF document text
    • http://mydrivingschoolga.com/uploads/1/3/0/3/130324419/basef.pdfIn PDF document text
    • http://44michigan.com/uploads/1/3/0/2/130288341/07d7b23.pdfIn PDF document text
    • http://nycelitehealth.com/uploads/1/3/0/6/130604782/wokazi.pdfIn PDF document text
    • http://jfrancisblack.com/uploads/1/3/0/5/130551184/7057806.pdfIn PDF document text
    • http://deeseconstruction.com/uploads/1/3/0/3/130313491/528068.pdfIn PDF document text
    • http://theshelter.ca/uploads/1/3/0/5/130588934/tekegabakanejaj.pdfIn PDF document text
    • http://costaricacreativereuse.org/uploads/1/3/0/7/130776358/6212875.pdfIn PDF document text
    • http://residencialelderlycare.com/uploads/1/3/0/4/130435757/8fc3934b1257306.pdfIn PDF document text
    • http://anne-denmark.com/uploads/1/3/0/6/130605179/5680440.pdfIn PDF document text
    • http://rosanelrealty.com/uploads/1/3/0/6/130639409/nowomoj_gukikiwisit.pdfIn PDF document text
    • http://wadessmokinbarbecue.com/uploads/1/3/0/2/130272390/jijame-migopobiwonali-wamivolutoje.pdfIn PDF document text
    • http://annamolnarjewellery.com/uploads/1/3/0/5/130552053/8182350.pdfIn PDF document text
    • http://www.americasbesthomeinspectors.com/uploads/1/3/0/9/130969002/7160397.pdfIn PDF document text
    • http://www.bestcosmeticdentistlasvegas.com/uploads/1/3/0/6/130639609/50939471.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 2

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_off0000785b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x785B 7608 bytes
SHA-256: 17bbe5d12b715c3af9091a2b68231d17a80aab7e40af89e14e98b36e442d7c65

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