Malicious PDF — malware analysis report

Static analysis result for SHA-256 95ccd51e47df8829…

MALICIOUS

PDF

59.3 KB Created: 2020-03-30 21:29:48 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: c8207f316d4e8c37c6ccb1f0b12314d2 SHA-1: eacc91c07687da37e744b3b36e0f3462c0e964d1 SHA-256: 95ccd51e47df8829762a110a751f9fc8ff72ad3667a727982602ee3a433f009d
94 Risk Score

Malware Insights

MITRE ATT&CK
T1598 Gather Victim Identity Information T1204 User Execution

This PDF file contains a large number of external links to other PDF files hosted on various domains. The PDF_SEO_LINK_FARM heuristic indicates this is a link farm, suggesting a malicious intent to manipulate search engine results or distribute further malicious content. The ML classifier also strongly flagged this file as malicious. 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://entrepreneurssuccessformula.com/uploads/1/3/0/7/130775871/130775871.html#4+principios+eticos+de+la+enfermer%C3%ADa
    • http://icolstudio.net/uploads/1/3/0/6/130604370/22744.pdf
    • http://ejkconsultants.com/uploads/1/3/1/0/131070457/6872904.pdf
    • http://filippocosentino.shop/uploads/1/3/0/8/130813651/nilokap.pdf
    • http://paigeleandraphotography.com/uploads/1/3/0/9/130969656/bodike_fuxirapuvig_xivudaxowovo.pdf
    • http://backroadsbestclub.store/uploads/1/3/0/5/130540554/b21cf77b8.pdf
    • http://sweetteyscatering.biz/uploads/1/3/0/7/130739389/8480019.pdf
    • http://lisakerriganmichel.com/uploads/1/3/0/2/130271113/pokosixupuki.pdf
    • http://glvoiceover.com/uploads/1/3/0/6/130621238/8810974.pdf
    • http://cprtrainedca.com/uploads/1/3/0/5/130539440/nizixamokinobe_vukunenukemen_vubeka_pesibu.pdf
    • http://sheasjewelbox.com/uploads/1/3/0/7/130739099/bagefofow.pdf
    • http://nenebrad.com/uploads/1/3/0/3/130323635/1748949302a461c.pdf
    • http://drshomo.com/uploads/1/3/0/6/130639863/volobamataso.pdf
    • http://bettersignblanks.com/uploads/1/3/1/4/131406352/tumolaxoxowek-tepakevoge-jizexemutexe-rigeme.pdf
    • http://annadustin.com/uploads/1/3/0/2/130272296/a9193f.pdf
    • http://citadel.vip/uploads/1/3/0/6/130639744/9700355.pdf
    • http://uaspilotgroundschool.com/uploads/1/3/0/7/130740072/5b9c0d3f0b7d5b.pdf
    • http://arie-de-wendt.com/uploads/1/3/0/6/130620928/nokiborowigibepal.pdf
    • http://dmicreativemanagement.com/uploads/1/3/1/1/131164067/sekulunumadigaduziku.pdf
    • http://ismaelnogales.com/uploads/1/3/0/6/130639474/wobepime_divadiwuba.pdf
    • http://odwsonline.com/uploads/1/3/0/7/130739663/c04f30b.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_off0000bcc8.bin
ceb532426d3a2fc9d7a4baa4dd04f2a01c64b9fdcb47fc236c4df4c66abc4a08		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC8 8932 bytes

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